摘要：
Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.)You have t... 阅读全文
2016年1月27日
摘要：
Given a sorted array of n integers, find the starting and ending position of a given target value.If the target is not found in the array, return [-1,... 阅读全文
摘要：
Write an efficient algorithm that searches for a value in an m x n matrix, return the occurrence of it.This matrix has the following properties:Intege... 阅读全文
2016年1月22日
摘要：
Given an integer array, heapify it into a min-heap array.For a heap array A, A[0] is the root of heap, and for each A[i], A[i * 2 + 1] is the left chi... 阅读全文
2016年1月18日
摘要：
Given n unique integers, number kExampleGiven [1,2,3,4], k = 2, target = 5. Return:[ [1,4], [2,3]]public class Solution { /** * @param A: an ... 阅读全文
2016年1月16日
摘要：
Singleton is a most widely used design pattern. If a class has and only has one instance at every moment, we call this design as singleton. For exampl... 阅读全文
摘要：
Given a directed graph, design an algorithm to find out whether there is a route between two nodes.ExampleGiven graph:A----->B----->C \ | \ | ... 阅读全文
摘要：
Given k strings, find the longest common prefix (LCP).ExampleFor strings "ABCD", "ABEF" and "ACEF", the LCP is "A"For strings "ABCDEFG", "ABCEFG" and ... 阅读全文
2016年1月15日
摘要：
Given two array of integers(the first array is array A, the second array is array B), now we are going to find a element in array A which is A[i], and... 阅读全文
摘要：
Given a linked list, return the node where the cycle begins.If there is no cycle, return null.ExampleGiven -21->10->4->5, tail connects to node index ... 阅读全文
