avatar Bite 270. Most frequent digit in number

Given an integer number, find the most frequent digit in it.

Examples:

  • 1998 -> two 9's, one 1, one 8 so return 9
  • 177 -> return 7
  • 2020 -> there is 2 two's, 2 zero's. Return 2 = the first highest hitter
  • 12345 -> all digits occur once, so like the last example return the first digit = 1

Food for thought: how to count things efficiently?

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