10. Has Duplicate
easyarrayhash set
Return true if any value appears at least twice in nums, and false if every element is distinct.
Example 1
Inputnums = [1,2,3,1]
Outputtrue
Example 2
Inputnums = [1,2,3,4]
Outputfalse
Example 3
Inputnums = [1,1,1,3,3,4,3,2,4,2]
Outputtrue
Constraints
- 1 ≤ nums.length ≤ 10⁵