The divisor will never be 0. Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [−231, 231 − 1]. For the purpose of this problem, assume that y
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321. 拼接最大数 - 给你两个整数数组 nums1 和 nums2,它们的长度分别为 m 和 n。数组 nums1 和 nums2 分别代表两个数各位上的数字。同时你也会得到一个整数 k。 请你利用这两个数组中的数字创建一个长度为 k <= m + n 的最大数。同一数组中数字的相对顺序必须保持不变。
题目:Balanced Binary Tree Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1. 题意分析: 给定一个二叉树,判断其是否是平衡二...
Math: https://discuss.leetcode.com/topic/43055/why-factor-2-or-3-the-math-behind-this-problem Dynamic Programming: Math Solution: classSolution(object):defintegerBreak(self, n):""":type n: int :rtype: int"""ifn == 2:return1ifn == 3:return2trace= n % 3index= n / 3iftrace ==...
Can you solve this real interview question? Find the Duplicate Number - Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one repeated number in nums, return this repeated number
This problem actually has the same solution as the above one. What is difference is that it may need O(n) complexity because of the duplication condition. If there are a lot of duplicate value, it will always run left++, then it will only need step by step working. ...
/** * @param {number} a * @param {number} b * @return {number} */ var add = function(a, b) { let sum = a ^ b; let carry = a & b; while(carry != 0){ carry <<= 1; a = sum; b = carry; sum = a ^ b; carry = a & b; } return sum; }; 参考: https://l...
题目链接 : https://leetcode-cn.com/problems/single-number-ii/题目描述:给定一个非空整数数组,除了某个元素只出现一次以外,其余每个元素均出现了三次。找出那个只出现了一次的元素。 说明: 你的算法应该具有…
leetcode求和问题描述(K sum problem): K sum的求和问题一般是这样子描述的:给你一组N个数字(比如 vector<int> num), 然后给你一个常数(比如 int target) ,我们的goal是在这一堆数里面找到K个数字,使得这K个数字的和等于target。 注意事项(constraints): ...