回答編集履歴
2
コード修正
test
CHANGED
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@@ -150,7 +150,7 @@
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150
150
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151
151
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if(nums.contains(i)) {
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152
152
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153
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-
System.out.print(line);
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153
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+
System.out.println(line);
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154
154
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155
155
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pw.println(line);
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156
156
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1
追加
test
CHANGED
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@@ -69,3 +69,107 @@
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69
69
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}
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70
70
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71
71
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```
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72
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+
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73
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---
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74
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75
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**追加**
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76
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77
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行を一つずつ指定する場合です.
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78
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79
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```java
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80
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81
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import java.io.BufferedReader;
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82
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83
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import java.io.FileReader;
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84
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85
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import java.io.FileWriter;
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86
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87
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import java.io.IOException;
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88
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89
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import java.io.PrintWriter;
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90
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91
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import java.util.ArrayList;
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92
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93
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import java.util.List;
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94
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95
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import java.util.Scanner;
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96
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97
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98
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99
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public class aaa {
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100
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101
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public static void main(String[] args) {
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102
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103
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String inFilename = "D:\Book3.csv";
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104
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105
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String outFilename = "D:\normdist_結果3.csv";
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106
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107
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108
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109
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//入力
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110
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111
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List<Integer> nums = new ArrayList<>();
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112
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113
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try(Scanner scanner = new Scanner(System.in);) {
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114
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115
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int v;
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116
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117
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while(true) {
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118
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119
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System.out.print("抜き出したい行は？(1以上を指定, 0以下で終了) :");
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120
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121
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v = scanner.nextInt();
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122
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123
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if(v <= 0) break;
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124
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125
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nums.add(v);
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126
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127
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}
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128
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129
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}
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130
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131
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if(nums.size() == 0) {
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132
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133
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System.out.print("抜き出しませんでした.");
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134
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135
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System.exit(0);
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136
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137
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}
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138
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139
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+
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140
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141
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//抽出
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142
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143
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try(BufferedReader br = new BufferedReader(new FileReader(inFilename));
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144
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145
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PrintWriter pw = new PrintWriter(new FileWriter(outFilename));) {
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146
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147
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String line;
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148
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+
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149
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for(int i=1; (line=br.readLine()) != null; i++) {
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150
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+
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151
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if(nums.contains(i)) {
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152
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153
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System.out.print(line);
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154
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+
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155
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pw.println(line);
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156
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+
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157
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}
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158
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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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System.out.print("抜き出しました.");
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162
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163
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} catch(IOException e) {
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164
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165
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e.printStackTrace();
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166
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+
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167
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System.exit(1);
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168
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+
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169
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}
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170
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+
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171
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+
}
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172
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+
|
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173
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+
}
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174
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+
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175
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+
```
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