回答編集履歴
2
追記
answer
CHANGED
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@@ -1,1 +1,34 @@
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1
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-
`[1-9][0-9]{0,4}`で充分な気がしますが...
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1
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`[1-9][0-9]{0,4}`で充分な気がしますが...
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2
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+
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3
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利用イメージ
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4
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---
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5
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```Java
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6
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import java.io.*;
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7
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import java.util.regex.*;
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8
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9
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class Main {
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10
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static int myInput(BufferedReader br, String prompt, Pattern p) throws IOException {
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11
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String ret;
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12
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13
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System.out.print(prompt);
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14
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while(true) {
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15
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ret = br.readLine();
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16
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if(p.matcher(ret).matches()) {
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break;
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18
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}
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19
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20
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System.out.print(prompt);
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21
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}
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22
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23
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return Integer.parseInt(ret);
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24
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}
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25
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26
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public static void main(String[] args) throws IOException {
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27
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try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
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28
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System.out.println(
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29
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myInput(br, "1-99999: ", Pattern.compile("[1-9][0-9]{0,4}"))
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30
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);
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31
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}
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32
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}
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33
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}
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34
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```
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1
修正
answer
CHANGED
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@@ -1,1 +1,1 @@
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1
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-
`[1-9][0-9]{4}`で充分な気がしますが...
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1
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+
`[1-9][0-9]{0,4}`で充分な気がしますが...
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