回答編集履歴
9
モンティー・ホールは選択しない!
test
CHANGED
@@ -58,12 +58,30 @@
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monty_hall_rate = count.times.count do
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select_box = boxes.keys.sample
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open_box = (boxes.keys - [select_box])
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.reject(&boxes.method(:[])).sample
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next_select_box = (boxes.keys - [select_box, open_box]).first
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boxes[next_select_box]
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end.to_f / count
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printf("%.1f%%\n", sonomama_rate * 100)
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printf("%.1f%%\n", naosu_rate * 100)
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printf("%.1f%%\n", monty_rate * 100)
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printf("%.1f%%\n", monty_hall_rate * 100)
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```
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@@ -134,12 +152,36 @@
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montyHallRate = [1..count].filter ->
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selectBox = sample(Object.keys(boxes))
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openBox = sample(Object.keys(boxes)
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.filter((box) -> box != selectBox)
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.filter((box) -> !boxes[box]))
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next_selectBox = Object.keys(boxes)
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.filter((box) -> box != selectBox && box != openBox)
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boxes[next_selectBox]
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.length / count
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console.log "#{(sonomamaRate * 100).toFixed(1)}%"
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console.log "#{(naosuRate * 100).toFixed(1)}%"
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console.log "#{(montyRate * 100).toFixed(1)}%"
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console.log "#{(montyHallRate * 100).toFixed(1)}%"
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```
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@@ -196,7 +238,7 @@
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val selectBox = boxes.keys.shuffled().first()
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val open
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val openBox = boxes.keys
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.filterNot({ selectBox.equals(it) })
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@@ -206,7 +248,7 @@
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val nextSelectBox = boxes.keys
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.filterNot({ open
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.filterNot({ openBox.equals(it) })
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.shuffled().first()
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@@ -216,12 +258,38 @@
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val montyHallRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val openBox = boxes.keys
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.filterNot({ selectBox.equals(it) })
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.filterNot({ boxes.getOrDefault(it, false) })
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.shuffled().first()
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val nextSelectBox = boxes.keys
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.filterNot({ selectBox.equals(it) || openBox.equals(it) })
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.shuffled().first()
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return boxes.getOrDefault(nextSelectBox, false)
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}).toDouble() / count
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println("%.1f%%".format(sonomamaRate * 100))
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println("%.1f%%".format(naosuRate * 100))
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println("%.1f%%".format(montyRate * 100))
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println("%.1f%%".format(montyHallRate * 100))
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}
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```
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8
最初Kotlinスクリプトで書いていたから外出ししていたけど、なんでトップにあんねん!とおもってmainの中に引っ込めた。
test
CHANGED
@@ -150,72 +150,72 @@
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val boxes = mapOf(
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"a" to true,
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"b" to false,
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"c" to false)
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val count = 100000 // 10万回
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val sonomamaRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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return boxes.getOrDefault(selectBox, false)
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}).toDouble() / count
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val naosuRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val nextSelectBox = boxes.keys
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.filterNot({ selectBox.equals(it) })
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.shuffled().first()
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return boxes.getOrDefault(nextSelectBox, false)
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}).toDouble() / count
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val montyRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val open_box = boxes.keys
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.filterNot({ selectBox.equals(it) })
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.filterNot({ boxes.getOrDefault(it, false) })
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.shuffled().first()
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val nextSelectBox = boxes.keys
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.filterNot({ open_box.equals(it) })
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.shuffled().first()
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return boxes.getOrDefault(nextSelectBox, false)
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}).toDouble() / count
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fun main(args: Array<String>) {
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val boxes = mapOf(
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"a" to true,
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"b" to false,
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"c" to false)
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val count = 100000 // 10万回
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val sonomamaRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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return boxes.getOrDefault(selectBox, false)
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}).toDouble() / count
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val naosuRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val nextSelectBox = boxes.keys
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.filterNot({ selectBox.equals(it) })
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.shuffled().first()
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return boxes.getOrDefault(nextSelectBox, false)
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}).toDouble() / count
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val montyRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val open_box = boxes.keys
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.filterNot({ selectBox.equals(it) })
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.filterNot({ boxes.getOrDefault(it, false) })
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.shuffled().first()
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val nextSelectBox = boxes.keys
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.filterNot({ open_box.equals(it) })
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.shuffled().first()
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return boxes.getOrDefault(nextSelectBox, false)
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}).toDouble() / count
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println("%.1f%%".format(sonomamaRate * 100))
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println("%.1f%%".format(naosuRate * 100))
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7
上ってどこだ?
test
CHANGED
@@ -226,4 +226,4 @@
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```
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-
※
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※ 3番目のコードはKotlinです。Kotlinはシンタックス指定が対応していないっぽい。
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6
はじめてのKotlin
test
CHANGED
@@ -225,3 +225,5 @@
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}
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```
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228
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+
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+
※ 上のコードはKotlinです。Kotlinはシンタックス指定が対応していないっぽい。
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5
Javaが抜けていたので追加した。
test
CHANGED
@@ -141,3 +141,87 @@
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console.log "#{(montyRate * 100).toFixed(1)}%"
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143
143
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```
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144
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145
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146
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147
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```Kotlin
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148
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import kotlin.ranges.IntRange
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151
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152
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153
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val boxes = mapOf(
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"a" to true,
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157
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"b" to false,
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158
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159
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"c" to false)
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160
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161
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162
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163
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val count = 100000 // 10万回
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164
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165
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166
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167
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val sonomamaRate = IntRange(1, count).count(fun(_: Int): Boolean {
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169
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val selectBox = boxes.keys.shuffled().first()
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171
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return boxes.getOrDefault(selectBox, false)
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173
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}).toDouble() / count
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174
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175
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val naosuRate = IntRange(1, count).count(fun(_: Int): Boolean {
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val selectBox = boxes.keys.shuffled().first()
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val nextSelectBox = boxes.keys
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183
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.filterNot({ selectBox.equals(it) })
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184
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185
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.shuffled().first()
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186
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187
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return boxes.getOrDefault(nextSelectBox, false)
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188
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189
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}).toDouble() / count
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190
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191
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192
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193
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val montyRate = IntRange(1, count).count(fun(_: Int): Boolean {
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194
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195
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val selectBox = boxes.keys.shuffled().first()
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196
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197
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val open_box = boxes.keys
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198
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199
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.filterNot({ selectBox.equals(it) })
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200
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201
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.filterNot({ boxes.getOrDefault(it, false) })
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202
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203
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.shuffled().first()
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204
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205
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val nextSelectBox = boxes.keys
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.filterNot({ open_box.equals(it) })
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209
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.shuffled().first()
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210
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211
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return boxes.getOrDefault(nextSelectBox, false)
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212
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213
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}).toDouble() / count
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214
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215
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216
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217
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fun main(args: Array<String>) {
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218
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219
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println("%.1f%%".format(sonomamaRate * 100))
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220
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221
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println("%.1f%%".format(naosuRate * 100))
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222
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223
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println("%.1f%%".format(montyRate * 100))
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}
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226
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```
|
4
Rubyに引っ張られてスネークケースになっていたのでキャメルケースに直す
test
CHANGED
@@ -90,54 +90,54 @@
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90
90
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91
91
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92
92
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93
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-
sonomama
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93
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sonomamaRate = [1..count].filter ->
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94
94
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95
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-
select
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95
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selectBox = sample(Object.keys(boxes))
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96
96
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97
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-
boxes[select
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97
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+
boxes[selectBox]
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98
98
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99
99
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.length / count
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100
100
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101
101
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102
102
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103
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-
naosu
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103
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naosuRate = [1..count].filter ->
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104
104
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105
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-
select
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105
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selectBox = sample(Object.keys(boxes))
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106
106
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107
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-
next_select
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107
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next_selectBox = sample(Object.keys(boxes)
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108
108
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109
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-
.filter((box) -> box != select
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109
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.filter((box) -> box != selectBox))
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110
110
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111
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-
boxes[next_select
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111
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+
boxes[next_selectBox]
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112
112
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113
113
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.length / count
|
114
114
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115
115
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116
116
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117
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-
monty
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117
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montyRate = [1..count].filter ->
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118
118
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119
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-
select
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119
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selectBox = sample(Object.keys(boxes))
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120
120
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121
|
-
open
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121
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+
openBox = sample(Object.keys(boxes)
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122
122
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123
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-
.filter((box) -> box != select
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123
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+
.filter((box) -> box != selectBox)
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124
124
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125
125
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.filter((box) -> !boxes[box]))
|
126
126
|
|
127
|
-
next_select
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127
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+
next_selectBox = sample(Object.keys(boxes)
|
128
128
|
|
129
|
-
.filter((box) -> box != open
|
129
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+
.filter((box) -> box != openBox))
|
130
130
|
|
131
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-
boxes[next_select
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131
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+
boxes[next_selectBox]
|
132
132
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133
133
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.length / count
|
134
134
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135
135
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136
136
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137
|
-
console.log "#{(sonomama
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137
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+
console.log "#{(sonomamaRate * 100).toFixed(1)}%"
|
138
138
|
|
139
|
-
console.log "#{(naosu
|
139
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+
console.log "#{(naosuRate * 100).toFixed(1)}%"
|
140
140
|
|
141
|
-
console.log "#{(monty
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141
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+
console.log "#{(montyRate * 100).toFixed(1)}%"
|
142
142
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|
143
143
|
```
|
3
JavaScriptのタグがあることに気付いた
test
CHANGED
@@ -65,3 +65,79 @@
|
|
65
65
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printf("%.1f%%\n", monty_rate * 100)
|
66
66
|
|
67
67
|
```
|
68
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+
|
69
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+
|
70
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+
|
71
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+
```CoffeeScript
|
72
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+
|
73
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+
boxes =
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74
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+
|
75
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+
a: true
|
76
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+
|
77
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+
b: false
|
78
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+
|
79
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+
c: false
|
80
|
+
|
81
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+
|
82
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+
|
83
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+
count = 100000 # 10万回
|
84
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+
|
85
|
+
|
86
|
+
|
87
|
+
sample = (arr) ->
|
88
|
+
|
89
|
+
arr[Math.floor(Math.random() * arr.length)]
|
90
|
+
|
91
|
+
|
92
|
+
|
93
|
+
sonomama_rate = [0...count].filter ->
|
94
|
+
|
95
|
+
select_box = sample(Object.keys(boxes))
|
96
|
+
|
97
|
+
boxes[select_box]
|
98
|
+
|
99
|
+
.length / count
|
100
|
+
|
101
|
+
|
102
|
+
|
103
|
+
naosu_rate = [0...count].filter ->
|
104
|
+
|
105
|
+
select_box = sample(Object.keys(boxes))
|
106
|
+
|
107
|
+
next_select_box = sample(Object.keys(boxes)
|
108
|
+
|
109
|
+
.filter((box) -> box != select_box))
|
110
|
+
|
111
|
+
boxes[next_select_box]
|
112
|
+
|
113
|
+
.length / count
|
114
|
+
|
115
|
+
|
116
|
+
|
117
|
+
monty_rate = [0...count].filter ->
|
118
|
+
|
119
|
+
select_box = sample(Object.keys(boxes))
|
120
|
+
|
121
|
+
open_box = sample(Object.keys(boxes)
|
122
|
+
|
123
|
+
.filter((box) -> box != select_box)
|
124
|
+
|
125
|
+
.filter((box) -> !boxes[box]))
|
126
|
+
|
127
|
+
next_select_box = sample(Object.keys(boxes)
|
128
|
+
|
129
|
+
.filter((box) -> box != open_box))
|
130
|
+
|
131
|
+
boxes[next_select_box]
|
132
|
+
|
133
|
+
.length / count
|
134
|
+
|
135
|
+
|
136
|
+
|
137
|
+
console.log "#{(sonomama_rate * 100).toFixed(1)}%"
|
138
|
+
|
139
|
+
console.log "#{(naosu_rate * 100).toFixed(1)}%"
|
140
|
+
|
141
|
+
console.log "#{(monty_rate * 100).toFixed(1)}%"
|
142
|
+
|
143
|
+
```
|
2
rateは最大1で%にするときに100かけた方が綺麗になるような気がした。たぶん、木の精だけど。
test
CHANGED
@@ -26,7 +26,7 @@
|
|
26
26
|
|
27
27
|
boxes[select_box]
|
28
28
|
|
29
|
-
end.to_f / count
|
29
|
+
end.to_f / count
|
30
30
|
|
31
31
|
|
32
32
|
|
@@ -38,7 +38,7 @@
|
|
38
38
|
|
39
39
|
boxes[next_select_box]
|
40
40
|
|
41
|
-
end.to_f / count
|
41
|
+
end.to_f / count
|
42
42
|
|
43
43
|
|
44
44
|
|
@@ -54,14 +54,14 @@
|
|
54
54
|
|
55
55
|
boxes[next_select_box]
|
56
56
|
|
57
|
-
end.to_f / count
|
57
|
+
end.to_f / count
|
58
58
|
|
59
59
|
|
60
60
|
|
61
|
-
printf("%.1f%%\n", sonomama_rate)
|
61
|
+
printf("%.1f%%\n", sonomama_rate * 100)
|
62
62
|
|
63
|
-
printf("%.1f%%\n", naosu_rate)
|
63
|
+
printf("%.1f%%\n", naosu_rate * 100)
|
64
64
|
|
65
|
-
printf("%.1f%%\n", monty_rate)
|
65
|
+
printf("%.1f%%\n", monty_rate * 100)
|
66
66
|
|
67
67
|
```
|
1
sampleメソッドの方が良かった
test
CHANGED
@@ -22,7 +22,7 @@
|
|
22
22
|
|
23
23
|
sonomama_rate = count.times.count do
|
24
24
|
|
25
|
-
select_box = boxes.keys.s
|
25
|
+
select_box = boxes.keys.sample
|
26
26
|
|
27
27
|
boxes[select_box]
|
28
28
|
|
@@ -32,9 +32,9 @@
|
|
32
32
|
|
33
33
|
naosu_rate = count.times.count do
|
34
34
|
|
35
|
-
select_box = boxes.keys.s
|
35
|
+
select_box = boxes.keys.sample
|
36
36
|
|
37
|
-
next_select_box = (boxes.keys - [select_box]).s
|
37
|
+
next_select_box = (boxes.keys - [select_box]).sample
|
38
38
|
|
39
39
|
boxes[next_select_box]
|
40
40
|
|
@@ -44,13 +44,13 @@
|
|
44
44
|
|
45
45
|
monty_rate = count.times.count do
|
46
46
|
|
47
|
-
select_box = boxes.keys.s
|
47
|
+
select_box = boxes.keys.sample
|
48
48
|
|
49
49
|
open_box = (boxes.keys - [select_box])
|
50
50
|
|
51
|
-
.reject(&boxes.method(:[])).s
|
51
|
+
.reject(&boxes.method(:[])).sample
|
52
52
|
|
53
|
-
next_select_box = (boxes.keys - [open_box]).s
|
53
|
+
next_select_box = (boxes.keys - [open_box]).sample
|
54
54
|
|
55
55
|
boxes[next_select_box]
|
56
56
|
|