README ¶ < Previous Next > 217. Contains Duplicate (Easy) Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. Example 1: Input: [1,2,3,1] Output: true Example 2: Input: [1,2,3,4] Output: false Example 3: Input: [1,1,1,3,3,4,3,2,4,2] Output: true Related Topics [Array] [Hash Table] Similar Questions Contains Duplicate II (Easy) Contains Duplicate III (Medium) Expand ▾ Collapse ▴ Documentation ¶ There is no documentation for this package. Source Files ¶ View all Source files contains_duplicate.go Click to show internal directories. Click to hide internal directories.