回答編集履歴
2
追記
test
CHANGED
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@@ -57,3 +57,77 @@
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57
57
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*/
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58
58
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59
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```
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60
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61
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62
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63
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**追記**
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64
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65
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すみません。
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66
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67
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確かにこれだと整数4、5桁でも通ってしまいますね。
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68
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69
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+
こちらで
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70
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71
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```java
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72
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73
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Pattern pt = Pattern.compile("^([1-9][0-9]{0,2}|0)(\.[0-9]{1,2})?$");
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74
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75
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76
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77
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String num1 = "1";
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78
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79
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String num2 = "1.1";
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80
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81
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String num3 = "123";
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82
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83
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String num4 = "1.12";
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84
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85
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String num5 = "1234";
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86
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87
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String num6 = "123.12";
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88
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89
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String num7 = "1234.12";
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90
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91
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String num8 = "123.123";
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92
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93
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94
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95
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System.out.println(pt.matcher(num1).find());
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96
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97
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System.out.println(pt.matcher(num2).find());
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98
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99
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System.out.println(pt.matcher(num3).find());
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100
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101
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System.out.println(pt.matcher(num4).find());
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102
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103
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System.out.println(pt.matcher(num5).find());
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104
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105
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System.out.println(pt.matcher(num6).find());
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106
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107
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System.out.println(pt.matcher(num7).find());
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108
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109
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System.out.println(pt.matcher(num8).find());
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110
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111
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112
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113
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/*
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114
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115
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true
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116
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true
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118
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true
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120
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121
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true
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122
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123
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false
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124
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125
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true
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126
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+
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127
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false
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128
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129
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false
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130
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+
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131
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*/
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132
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+
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133
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```
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1
ソース修正
test
CHANGED
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@@ -2,15 +2,23 @@
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2
2
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3
3
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```java
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4
4
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5
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-
Pattern pt = Pattern.compile("^\d{1,3}\.\d{
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5
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+
Pattern pt = Pattern.compile("^\d{1,3}\.?\d{0,2}$");
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6
6
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7
7
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8
8
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9
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-
String num1 = "1
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9
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+
String num1 = "1";
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10
10
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11
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-
String num2 = "1
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11
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String num2 = "1.1";
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12
12
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13
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String num3 = "123";
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14
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15
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String num4 = "1.12";
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16
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17
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String num5 = "123.12";
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18
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19
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String num6 = "1234.12";
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20
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13
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-
String num
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21
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String num7 = "123.123";
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14
22
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15
23
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16
24
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@@ -20,9 +28,25 @@
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20
28
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21
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System.out.println(pt.matcher(num3).find());
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22
30
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31
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System.out.println(pt.matcher(num4).find());
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32
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33
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System.out.println(pt.matcher(num5).find());
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34
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35
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System.out.println(pt.matcher(num6).find());
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36
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37
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System.out.println(pt.matcher(num7).find());
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38
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+
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23
39
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24
40
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25
41
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/*
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42
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+
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43
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+
true
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44
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+
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45
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+
true
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46
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+
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47
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+
true
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48
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+
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49
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+
true
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26
50
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27
51
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true
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28
52
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