Format Number like Stack Overflow (rounded to thousands with K suffix)

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Like this: (EDIT: Tested)

static string FormatNumber(int num) {
    if (num >= 100000)
        return FormatNumber(num / 1000) + "K";

    if (num >= 10000)
        return (num / 1000D).ToString("0.#") + "K";

    return num.ToString("#,0");
}

Examples:

  • 1 => 1
  • 23 => 23
  • 136 => 136
  • 6968 => 6,968
  • 23067 => 23.1K
  • 133031 => 133K

Note that this will give strange values for numbers >= 108.
For example, 12345678 becomes 12.3KK.

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