摘要：/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ public class Solution { ...
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posted @ 2016-06-29 11:37
随笔分类 - LeetCode
摘要：/* Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2, 2]. Note: Each element in the result should appear as many times...
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posted @ 2016-06-25 15:07
摘要：Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum pro
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posted @ 2016-06-25 14:19
摘要：Given a non-empty array of integers, return the k most frequent elements. For example,Given [1,1,1,2,2,3] and k = 2, return [1,2]. Note: You may assum
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posted @ 2016-06-24 16:14
摘要：Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except
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posted @ 2016-06-23 10:09
摘要：Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime c
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posted @ 2016-04-19 14:00
摘要：Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: But the fol
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posted @ 2016-04-12 21:06
摘要：Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a lette
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posted @ 2016-04-12 15:26
摘要：Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction
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posted @ 2016-04-12 02:14
摘要：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 the
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posted @ 2016-04-11 23:49
摘要：You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston
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posted @ 2016-04-11 21:10
摘要：Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you
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posted @ 2016-04-11 20:03
摘要：Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo
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posted @ 2016-04-11 02:43
摘要：You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single
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posted @ 2016-04-11 01:19
摘要：Given an input string, reverse the string word by word. For example,Given s = "the sky is blue",return "blue is sky the".
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posted @ 2016-04-10 02:48
摘要：Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrenc
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posted @ 2016-04-10 02:21
摘要：Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to in
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posted @ 2016-04-06 15:13
摘要：Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 --
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posted @ 2016-04-06 15:08
摘要：e.g. i love java return java love i
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posted @ 2016-03-30 22:24
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