質問編集履歴
5
修正しました。
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@@ -20,7 +20,7 @@
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### 該当のソースコード
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```java
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-
public class
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public class QuickSort {
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ArrayList<Integer> array = new ArrayList<Integer>();
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4
修正しました。
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@@ -13,8 +13,8 @@
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at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
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at java.base/java.util.Objects.checkIndex(Objects.java:373)
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at java.base/java.util.ArrayList.get(ArrayList.java:426)
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at Quick.
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at Quick.Quick(Quick.java:24)
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at Quick.
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at Quick.Quick(Quick.java:35)
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```
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### 該当のソースコード
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3
修正しました
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@@ -13,8 +13,8 @@
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at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
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at java.base/java.util.Objects.checkIndex(Objects.java:373)
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at java.base/java.util.ArrayList.get(ArrayList.java:426)
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at
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+
at Quick.Quick1(Quick.java:24)
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at
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at Quick.Quick1(Quick.java:35)
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```
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### 該当のソースコード
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2
ご指摘頂いた部分を修正しました。
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@@ -7,17 +7,14 @@
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7
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### 発生している問題・エラーメッセージ
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8
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```
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Exception in thread "main" java.lang.
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Exception in thread "main" java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
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at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
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at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
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at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
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11
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-
at java.base/java.util.
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at java.base/java.util.Objects.checkIndex(Objects.java:373)
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at java.base/java.util.ArrayList.grow(ArrayList.java:236)
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at java.base/java.util.ArrayList.grow(ArrayList.java:243)
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at java.base/java.util.ArrayList.add(ArrayList.java:453)
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at java.base/java.util.ArrayList.
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at java.base/java.util.ArrayList.get(ArrayList.java:426)
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at
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at kadai7.S7018534_Quick.Quick1(S7018534_Quick.java:24)
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at
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at kadai7.S7018534_Quick.Quick1(S7018534_Quick.java:35)
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at Quick.Quick(Quick.java:34)
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at Quick.Quick(Quick.java:34)
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...
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```
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### 該当のソースコード
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@@ -38,8 +35,8 @@
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35
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//一番左の値をピボットとして分割処理
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int P = array.get(0);
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for (int i=
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for (int i=1; i<size; i++) {
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if (P >
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if (P > array.get(i)) {
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L.add(array.get(i));
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}else {
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R.add(array.get(i));
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@@ -53,15 +50,15 @@
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array.clear();
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//分割した値を統合
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int indexL = 0, indexR = 0;
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while (indexL<L.size() || indexR<R.size()) {
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for (int i=0; i<L.size(); i++) {
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array.add(R.get(indexR)); indexR++;
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}
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else if (indexR == R.size()) {
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-
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array.add(L.get(i));
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63
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}
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}
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+
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array.add(P);
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+
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for (int i=0; i<R.size(); i++) {
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array.add(R.get(i));
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}
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}
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}
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```
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1
すみません。こちらにミスです。
title
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body
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@@ -28,7 +28,7 @@
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28
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ArrayList<Integer> array = new ArrayList<Integer>();
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29
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30
30
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//クイックソート
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31
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-
void
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+
void Quick(ArrayList<Integer> array) {
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32
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int size = array.size();
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34
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//listの大きさが1なら再帰終了
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@@ -56,10 +56,10 @@
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int indexL = 0, indexR = 0;
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while (indexL<L.size() || indexR<R.size()) {
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if (indexL == L.size()) {
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-
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+
array.add(R.get(indexR)); indexR++;
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}
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else if (indexR == R.size()) {
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-
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+
array.add(L.get(indexL)); indexL++;
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}
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}
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}
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