lintcode-436-最大正方形

动态规划算法模板和demo

366. 斐波纳契数列中文 English 查找斐波纳契数列中第 N 个数. 所谓的斐波纳契数列是指: 前2个数是 0 和 1 . 第 i 个数是第 i-1 个数和第i-2 个数的和. 斐波纳契数列的前10个数字是: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 ... 样例样例 1: 输入: 1 输出: 0 样例解释: 返回斐波那契的第一个数字,是0. 样例 2: 输入: 2 输出: 1 样例解释: 返回斐波那契的第二个数字是1. class Solution: "&qu…

lintcode：最大子正方形

题目: Maximal Square Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. 样例 For example, given the following matrix: 1 0 1 0 0 1 0 1 1 1 1 1 1 1 1 1 0 0 1 0 Return 4. 解题: 给定一个二维01矩阵,从中找出最大的全…

[LintCode] Maximal Square 最大正方形

Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. Have you met this question in a real interview? Example For example, given the following matrix: 1 0 1 0 0 1 0 1 1 1 1 1 1 1 1 1 0 0…

[LintCode]——目录

Yet Another Source Code for LintCode Current Status : 232AC / 289ALL in Language C++, Up to date (2016-02-10) For more problems and solutions, you can see my LintCode repository. I'll keep updating for full summary and better solutions. See cnblogs t…

leetcode & lintcode for bug-free

刷题备忘录,for bug-free leetcode 396. Rotate Function 题意: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k…

leetcode & lintcode 题解

刷题备忘录,for bug-free 招行面试题--求无序数组最长连续序列的长度,这里连续指的是值连续--间隔为1,并不是数值的位置连续问题: 给出一个未排序的整数数组,找出最长的连续元素序列的长度. 如: 给出[100, 4, 200, 1, 3, 2], 最长的连续元素序列是[1, 2, 3, 4].返回它的长度:4. 你的算法必须有O(n)的时间复杂度 . 解法: 初始思路要找连续的元素,第一反应一般是先把数组排序.但悲剧的是题目中明确要求了O(n)的时间复杂度,要做一次排序,是不能达…

lintcode算法周竞赛

------------------------------------------------------------第七周:Follow up question 1,寻找峰值寻找峰值描述笔记数据评测你给出一个整数数组(size为n),其具有以下特点: 相邻位置的数字是不同的 A[0] < A[1] 并且 A[n - 2] > A[n - 1] 假定P是峰值的位置则满足A[P] > A[P-1]且A[P] > A[P+1],返回数组中任意一个峰值的位置. 注意事项数…

[LeetCode] Matchsticks to Square 火柴棍组成正方形

Remember the story of Little Match Girl? By now, you know exactly what matchsticks the little match girl has, please find out a way you can make one square by using up all those matchsticks. You should not break any stick, but you can link them up, a…

[LeetCode] Maximal Square 最大正方形

Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. For example, given the following matrix: 1 0 1 0 0 1 0 1 1 1 1 1 0 0 1 0 Return 4. Credits:Special thanks to @Freezen for adding this pr…

（lintcode全部题目解答之）九章算法之算法班题目全解(附容易犯的错误)

--------------------------------------------------------------- 本文使用方法:所有题目,只需要把标题输入lintcode就能找到.主要是简单的剖析思路以及不能bug-free的具体细节原因. ---------------------------------------------------------------- ------------------------------------------- 第九周:图和搜索. ---…

【纯css】左图右文列表，左图外框宽度占一定百分比的正方形,右上下固定，右中自动响应高度。支持不规则图片。

查看演示 <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0&quo…

Lintcode 85. 在二叉查找树中插入节点

-------------------------------------------- AC代码: /** * Definition of TreeNode: * public class TreeNode { * public int val; * public TreeNode left, right; * public TreeNode(int val) { * this.val = val; * this.left = this.right = null; * } * } */ pub…

Lintcode 166. 主元素

----------------------------------- Moore's voting algorithm算法:从一个集合中找出出现次数半数以上的元素,每次从集合中去掉一对不同的数,当剩下一个元素的时候(事实上只要满足一个元素出现过半就一定会剩下一个元素的)这个元素就是我们要找的数了. AC代码: public class Solution { /** * @param nums: a list of integers * @return: find a majority numb…

Lintcode 166. 链表倒数第n个节点

----------------------------------- 最开始的想法是先计算出链表的长度length,然后再从头走 length-n 步即是需要的位置了. AC代码: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * this.next = null; * } * } */ pu…

Lintcode 157. 判断字符串是否没有重复字符

------------------------ 因为字符究竟是什么样的无法确定(比如编码之类的),恐怕是没办法假设使用多大空间(位.数组)来标记出现次数的,集合应该可以但感觉会严重拖慢速度... 还是只做出了O(n^2)... 勉强AC代码: public class Solution { /** * @param str: a string * @return: a boolean */ public boolean isUnique(String s) { for(int i=0;i<s.…

Lintcode 175. 翻转二叉树

-------------------- 递归那么好为什么不用递归啊...我才不会被你骗...(其实是因为用惯了递归啰嗦的循环反倒不会写了...o(╯□╰)o) AC代码: /** * Definition of TreeNode: * public class TreeNode { * public int val; * public TreeNode left, right; * public TreeNode(int val) { * this.val = val; * this.left…

Lintcode 372. O(1)时间复杂度删除链表节点

----------------------------------- AC代码: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * this.next = null; * } * } */ public class Solution { /** * @param node: the node…

Lintcode 469. 等价二叉树

----------------------------------------------- AC代码: /** * Definition of TreeNode: * public class TreeNode { * public int val; * public TreeNode left, right; * public TreeNode(int val) { * this.val = val; * this.left = this.right = null; * } * } */…

Lintcode 375.克隆二叉树

-------------------------- 水题 AC代码: /** * Definition of TreeNode: * public class TreeNode { * public int val; * public TreeNode left, right; * public TreeNode(int val) { * this.val = val; * this.left = this.right = null; * } * } */ public class Solut…

Lintcode 102.带环链表

------------------------ 只要设置两个指针,称为快慢指针,当链表没有环的时候快指针会走到null,当链表有环的时候快指针早晚会追上慢指针的. AC代码: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * this.next = null; * } * } */ publi…

Lintcode 75.寻找峰值

--------------------------------------- 按照给定的峰值定义,峰值的左半部分一定是递增的,所以只要找到不递增的即可. AC代码: class Solution { /** * @param A: An integers array. * @return: return any of peek positions. */ public int findPeak(int[] A) { for(int i=1;i<A.length;i++){ if(A[i]>=…

Lintcode 150.买卖股票的最佳时机 II

------------------------------------------------------------ 卧槽竟然连题意都没看懂,百度了才明白题目在说啥....我好方啊....o(╯□╰)o AC代码: class Solution { /** * @param prices: Given an integer array * @return: Maximum profit */ public int maxProfit(int[] prices) { int res=0; fo…

Lintcode 82.落单的数

-------------------------------- 这道题好坑啊,自己说是2*n+1个数字,结果有组测试数据竟然传了个空数组进来... 经典位算法: n^n==0 n^0==n AC代码: public class Solution { /** *@param A : an integer array *return : a integer */ public int singleNumber(int[] A) { if(A.length==0) return 0; int n=A…

Lintcode 97.二叉树的最大深度

--------------------------------- AC代码: /** * Definition of TreeNode: * public class TreeNode { * public int val; * public TreeNode left, right; * public TreeNode(int val) { * this.val = val; * this.left = this.right = null; * } * } */ public class S…