Determine if a string is numeric: Difference between revisions
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Alternative 1 : Check that each character in the string is number |
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private static final boolean isNumeric(final String s) { |
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for (int x = 0; x < s.length(); x++) { |
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final char c = s.charAt(x); |
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if (x == 0 && (c == '-')) continue; // negative |
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if ((c >= '0') && (c <= '9')) continue; // 0 - 9 |
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return false; // invalid |
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} |
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return true; // valid |
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} |
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Alternative 2 : use a regular expression ( a more elegant solution) |
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public static boolean IsNumeric(string inputData) { |
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final static Regex isNumber = new Regex(@"^\d+$"); |
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Match m = isNumber.Match(inputData); |
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return m.Success; |
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} |
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==[[mIRC]]== |
==[[mIRC]]== |
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