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Home/ Questions/Q 7862923
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Editorial Team
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Editorial Team
Asked: June 2, 20262026-06-02T23:18:58+00:00 2026-06-02T23:18:58+00:00

Suppose I had the string 1122345 There are two pairs in this string. What’s

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Suppose I had the string

1122345

There are two pairs in this string. What’s the regular expression for counting the pairs in this string?

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  1. Editorial Team
    Editorial Team
    2026-06-02T23:18:59+00:00Added an answer on June 2, 2026 at 11:18 pm

    Try out this:

    ^(\d)\1*$ or try this ^([0-9])\1*$

    please modify the above regex according to your problem.pattern matching if the user enters same digit. \1 matches the first capture group, so the pattern matches whether the digits are repeated in the string.

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