原创 Continuous Subarray Sum II
Given an integer array, find a continuous rotate subarray where the sum of numbers is the biggest. Your code should re
2018-08-30 13:11:31
原创 Swap Nodes in Pairs
Given a linked list, swap every two adjacent nodes and return its head. For example, Given 1->2->3->4, you should ret
2018-08-30 13:11:30
原创 Best Time to Buy and Sell Stock III
Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find t
2018-08-30 13:11:18
原创 Recover Rotated Sorted Array
Given a rotated sorted array, recover it to sorted array in-place. Have you met this question in a real interview?
2018-08-30 13:11:17
2
原创 Delete Digits
Given string A representative a positive integer which has N digits, remove any k digits of the number, the remaining
2018-08-30 13:11:17
原创 Reverse Nodes in k-Group
Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of no
2018-08-30 13:11:16
原创 Generate Parentheses
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For exampl
2018-08-30 13:11:16
原创 Subtree
You have two every large binary trees: T1, with millions of nodes, and T2, with hundreds of nodes. Create an algorith
2018-08-30 13:11:16
4
原创 Product of Array Exclude Itself
Given an integers array A. Define B[i] = A[0] * ... * A[i-1] * A[i+1] * ... * A[n-1], calculate B WITHOUT divide oper
2018-08-30 13:11:16
原创 Remove Duplicates from Sorted Array
Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length
2018-08-30 13:11:16
1
原创 Set Matrix Zeroes
Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Have you met this ques
2018-08-30 13:11:15
原创 strStr
strstr (a.k.a find sub string), is a useful function in string operation. Your task is to implement this function. Fo
2018-08-30 13:11:15
原创 Letter Combinations of a Phone Number
Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to
2018-08-30 13:11:15
2
原创 3Sum
Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in
2018-08-30 13:11:15
3
原创 Balanced Binary Tree
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined a
2018-08-30 13:11:15