摘要：
Description: Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = num 阅读全文
摘要：
Description: Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole a 阅读全文
摘要：
Description: Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its ele 阅读全文