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Exercise: Count digits

  • Given an array of digits, count how many times each digit appears.
let digits = [1, 2, 1, 3, 4, 5, 6, 7, 8, 8, 4, 3, 9, 7, 8, 5, 2, 3, 3, 2, 2, 4, 2, 4, 2, 1];
0: 0
1: 3
2: 6
3: 4
4: 4
5: 2
6: 1
7: 2
8: 3
9: 1