1207. Unique Number of Occurrences
Unique Number of Occurrences - LeetCode 정수 배열 arr이 주어질 때, 배열 내 각 값의 발생 횟수가 모두 고유한 경우 true를 반환하고, 그렇지 않으면 false를 반환합니다. Given an array of integers arr, return true if the number of occurrences of each value in the array is unique or false otherwise. Example 1: Input: arr = [1,2,2,1,1,3] Output: true Explanation: The value 1 has 3 occurrences, 2 has 2 and 3 has 1. No two values have the same numbe..
LeetCode
2023. 10. 29. 11:58