回答編集履歴
2
追記
test
CHANGED
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@@ -1 +1,67 @@
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1
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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3
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4
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5
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利用イメージ
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6
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7
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---
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8
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9
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```Java
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10
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11
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import java.io.*;
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12
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13
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import java.util.regex.*;
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14
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15
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16
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17
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class Main {
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18
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static int myInput(BufferedReader br, String prompt, Pattern p) throws IOException {
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20
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String ret;
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22
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23
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System.out.print(prompt);
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while(true) {
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28
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ret = br.readLine();
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30
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31
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if(p.matcher(ret).matches()) {
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32
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break;
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34
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35
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}
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36
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37
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38
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39
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System.out.print(prompt);
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40
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41
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}
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42
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43
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44
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45
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return Integer.parseInt(ret);
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46
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47
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}
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48
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49
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50
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51
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public static void main(String[] args) throws IOException {
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52
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53
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try(BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
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54
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55
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System.out.println(
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56
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myInput(br, "1-99999: ", Pattern.compile("[1-9][0-9]{0,4}"))
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58
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59
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);
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60
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61
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}
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62
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63
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}
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64
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65
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}
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66
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67
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```
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1
修正
test
CHANGED
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@@ -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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