about | help | code help+videos | done | prefs |
Count the number of duplicate elements in an array countDuplicates([1, 1, 3, 5, 5, 5, 5, 7, 7, 11]) → 5 countDuplicates([1, 2, 3]) → 0 countDuplicates([1, 1, 1]) → 2 ...Save, Compile, Run (ctrl-enter) |
Progress graphs:
Your progress graph for this problem
Random user progress graph for this problem
Random Epic Progress Graph
Difficulty: 100
Copyright Nick Parlante 2017 - privacy