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Asked: 2026-05-30T12:33:42+00:00

I want to replace the spaces surrounded by digits or numbers by – .

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I want to replace the spaces surrounded by digits or numbers by -.

so if my string is I am Bob 12 12 This should get transformed to I am Bob 12-12.

Please suggest some possible answers using Java.

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1 Answer

  1. Editorial Team
    str = str.replaceAll("(?<=\\d)\\s(?=\\d)", "-");

    This looks for a space (\\s) preceded by a digit ((?<=\\d)) and followed by a digit ((?=\\d)), and replaces that space with a dash.

    If you want to replace groups of consecutive spaces, change \\s to \\s+.

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