摘要： 题目：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that 阅读全文

摘要： 题目：Given a non-negative number represented as an array of digits, plus one to the number. The digits are stored such that the most significant digit i 阅读全文

摘要： 题目：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] = nums[j] and t 阅读全文