java: Find integer's frequency in an array

馋奶兔 提交于 2019-12-02 13:40:15

Here are some options:

  • Nested Loops: For each range, count the number of numbers that fall in that range.
  • 'new int[subnum]'. In one pass, count the number of items in each range. Consider using division and truncation.
  • Sort the numbers. Count how many occur before each boundary.
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