質問編集履歴
15
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test
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````import java.io.BufferedReader;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.util.StringTokenizer;
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import java.io.BufferedReader;
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````import java.io.BufferedReader;
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import java.io.InputStreamReader;
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}
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}
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```
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public UsrExprException(String s){
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super(s);
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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class UsrExprException extends Exception {
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public UsrExprException(String s){
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> public UsrExprException(String s){
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super(s);
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class UsrExprException extends Exception {
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> class UsrExprException extends Exception {
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test
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}
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}
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}
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//Calcクラス
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8
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test
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@@ -20,7 +20,7 @@
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import java.io.BufferedReader;
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> import java.io.BufferedReader;
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import java.io.InputStreamReader;
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}
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}>
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//Calcクラス
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public class Calc {
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//メインメソッド
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public static void main(String[] args) {
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try {
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int ans = 0;
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InputStreamReader isr = new InputStreamReader(System.in);
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BufferedReader br = new BufferedReader(isr);
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String s = br.readLine();
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while (s != null && !s.equals("")) {
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Calc calc = new Calc();
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ans = calc.calc(s);
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System.out.println("=" + ans);
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s = br.readLine()
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}
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} catch (Exception e) {
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System.out.println("例外:"+ e);
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}
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}
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public int calc(String s) throws UsrExprException {
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106
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UsrExprException ue;
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int ans = 0;
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StringTokenizer st = new StringTokenizer(s, "+-*/", true);
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String sign = "+";
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String tok ;
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int tknum = 0;
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while (st.hasMoreTokens()) {
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tok = st.nextToken();
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tok = tok.trim();
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if (tok.length() == 0) {
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continue;
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}
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if (tknum % 2 == 0) {
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if (sign.equals("+")) {
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ans += Integer.parseInt(tok);
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}
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else if (sign.equals("-")) {
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ans -= Integer.parseInt(tok);
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}
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else if (sign.equals("*")) {
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ans *= Integer.parseInt(tok);
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}
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else if (sign.equals("/")) {
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ans /= Integer.parseInt(tok);
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}
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} else {
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sign = tok;
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}
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tknum++;
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194
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}
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196
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197
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//式の最後が整数でない場合
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198
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199
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if ( tknum % 2 == 0) {
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200
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201
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ue = new UsrExprException("最終整数なし");
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202
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throw ue;
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}
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206
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//ansを返す
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208
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return ans;
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210
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}
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212
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41
213
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}
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42
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-
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43
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-
//Calcクラス
|
44
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-
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45
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-
public class Calc {
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46
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-
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47
|
-
//メインメソッド
|
48
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-
|
49
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-
public static void main(String[] args) {
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50
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-
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51
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-
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52
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-
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53
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-
try {
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54
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55
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-
int ans = 0;
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56
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-
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57
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58
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59
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InputStreamReader isr = new InputStreamReader(System.in);
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60
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61
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62
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63
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-
BufferedReader br = new BufferedReader(isr);
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64
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-
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65
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-
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66
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-
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67
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-
String s = br.readLine();
|
68
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-
|
69
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-
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70
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-
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71
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-
while (s != null && !s.equals("")) {
|
72
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-
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73
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-
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74
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-
|
75
|
-
Calc calc = new Calc();
|
76
|
-
|
77
|
-
|
78
|
-
|
79
|
-
ans = calc.calc(s);
|
80
|
-
|
81
|
-
|
82
|
-
|
83
|
-
System.out.println("=" + ans);
|
84
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-
|
85
|
-
|
86
|
-
|
87
|
-
s = br.readLine()
|
88
|
-
|
89
|
-
}
|
90
|
-
|
91
|
-
|
92
|
-
|
93
|
-
} catch (Exception e) {
|
94
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-
|
95
|
-
|
96
|
-
|
97
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-
System.out.println("例外:"+ e);
|
98
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-
|
99
|
-
}
|
100
|
-
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101
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-
}
|
102
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-
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103
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-
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104
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-
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105
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-
public int calc(String s) throws UsrExprException {
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106
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-
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107
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-
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108
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-
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109
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-
UsrExprException ue;
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110
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-
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111
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-
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112
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-
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113
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-
int ans = 0;
|
114
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-
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115
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-
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116
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-
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117
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-
StringTokenizer st = new StringTokenizer(s, "+-*/", true);
|
118
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-
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119
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-
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120
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121
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String sign = "+";
|
122
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-
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123
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-
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124
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-
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125
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-
String tok ;
|
126
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-
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127
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int tknum = 0;
|
128
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-
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129
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-
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130
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-
|
131
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-
while (st.hasMoreTokens()) {
|
132
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133
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134
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135
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-
tok = st.nextToken();
|
136
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137
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138
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139
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-
tok = tok.trim();
|
140
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-
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141
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142
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-
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143
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-
if (tok.length() == 0) {
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144
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145
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146
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-
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147
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-
continue;
|
148
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-
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149
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-
}
|
150
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-
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151
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-
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152
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-
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153
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-
if (tknum % 2 == 0) {
|
154
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-
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155
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-
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156
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-
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157
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-
if (sign.equals("+")) {
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158
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-
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159
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-
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160
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-
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161
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-
ans += Integer.parseInt(tok);
|
162
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-
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163
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-
}
|
164
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-
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165
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-
else if (sign.equals("-")) {
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166
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-
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167
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-
ans -= Integer.parseInt(tok);
|
168
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-
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169
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-
}
|
170
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-
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171
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-
else if (sign.equals("*")) {
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172
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173
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ans *= Integer.parseInt(tok);
|
174
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-
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175
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-
}
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176
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-
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177
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-
else if (sign.equals("/")) {
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178
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179
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ans /= Integer.parseInt(tok);
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180
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-
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181
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-
}
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182
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-
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183
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-
} else {
|
184
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-
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185
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-
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186
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-
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187
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-
sign = tok;
|
188
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-
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189
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-
}
|
190
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-
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191
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-
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192
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-
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193
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-
tknum++;
|
194
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-
|
195
|
-
}
|
196
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-
|
197
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-
//式の最後が整数でない場合
|
198
|
-
|
199
|
-
if ( tknum % 2 == 0) {
|
200
|
-
|
201
|
-
ue = new UsrExprException("最終整数なし");
|
202
|
-
|
203
|
-
throw ue;
|
204
|
-
|
205
|
-
}
|
206
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-
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207
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-
//ansを返す
|
208
|
-
|
209
|
-
return ans;
|
210
|
-
|
211
|
-
}
|
212
|
-
|
213
|
-
}
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7
修正
test
CHANGED
File without changes
|
test
CHANGED
@@ -20,7 +20,7 @@
|
|
20
20
|
|
21
21
|
|
22
22
|
|
23
|
-
|
23
|
+
import java.io.BufferedReader;
|
24
24
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25
25
|
import java.io.InputStreamReader;
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26
26
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@@ -210,4 +210,4 @@
|
|
210
210
|
|
211
211
|
}
|
212
212
|
|
213
|
-
}
|
213
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+
}
|
6
修正
test
CHANGED
File without changes
|
test
CHANGED
@@ -18,7 +18,9 @@
|
|
18
18
|
|
19
19
|
|
20
20
|
|
21
|
+
|
22
|
+
|
21
|
-
import java.io.BufferedReader;
|
23
|
+
> import java.io.BufferedReader;
|
22
24
|
|
23
25
|
import java.io.InputStreamReader;
|
24
26
|
|
@@ -208,4 +210,4 @@
|
|
208
210
|
|
209
211
|
}
|
210
212
|
|
211
|
-
}
|
213
|
+
}>
|
5
誤字
test
CHANGED
File without changes
|
test
CHANGED
@@ -18,7 +18,7 @@
|
|
18
18
|
|
19
19
|
|
20
20
|
|
21
|
-
|
21
|
+
import java.io.BufferedReader;
|
22
22
|
|
23
23
|
import java.io.InputStreamReader;
|
24
24
|
|
@@ -208,4 +208,4 @@
|
|
208
208
|
|
209
209
|
}
|
210
210
|
|
211
|
-
}
|
211
|
+
}
|
4
修正
test
CHANGED
File without changes
|
test
CHANGED
@@ -10,7 +10,7 @@
|
|
10
10
|
|
11
11
|
よろしくお願いします。
|
12
12
|
|
13
|
-
|
13
|
+
|
14
14
|
|
15
15
|
また下記のソースコードで改正案があればご教授願います。
|
16
16
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|
@@ -18,7 +18,7 @@
|
|
18
18
|
|
19
19
|
|
20
20
|
|
21
|
-
import java.io.BufferedReader;
|
21
|
+
> 引用テキストimport java.io.BufferedReader;
|
22
22
|
|
23
23
|
import java.io.InputStreamReader;
|
24
24
|
|
@@ -208,4 +208,4 @@
|
|
208
208
|
|
209
209
|
}
|
210
210
|
|
211
|
-
}
|
211
|
+
}> 引用テキスト
|
3
追加
test
CHANGED
File without changes
|
test
CHANGED
@@ -12,6 +12,10 @@
|
|
12
12
|
|
13
13
|
|
14
14
|
|
15
|
+
また下記のソースコードで改正案があればご教授願います。
|
16
|
+
|
17
|
+
よろしくお願いします。
|
18
|
+
|
15
19
|
|
16
20
|
|
17
21
|
import java.io.BufferedReader;
|
2
追加
test
CHANGED
File without changes
|
test
CHANGED
@@ -6,7 +6,11 @@
|
|
6
6
|
|
7
7
|
どのように修正したらよいでしょうか?
|
8
8
|
|
9
|
-
|
9
|
+
今後の参考の為にどなたか教えてください
|
10
|
+
|
11
|
+
よろしくお願いします。
|
12
|
+
|
13
|
+
|
10
14
|
|
11
15
|
|
12
16
|
|
1
誤字
test
CHANGED
File without changes
|
test
CHANGED
@@ -1,6 +1,6 @@
|
|
1
1
|
javaで計算機のプログラムを作成しました。
|
2
2
|
|
3
|
-
単項マイナス演算(例、10+5)を行う処理を追加したいのですが
|
3
|
+
単項マイナス演算(例、-10+5)を行う処理を追加したいのですが
|
4
4
|
|
5
5
|
修正方法がわかりません。
|
6
6
|
|