Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

public class Solution { public int maxArea(int[] height) { int left = 0, right = height.length - 1; int maxArea = 0; while (left < right) { maxArea = Math.max(maxArea, Math.min(height[left], height[right]) * (right - left)); if (height[left] < heigh…

####给定n个非负整数a1,a2,...,an,其中每个表示坐标(i,ai)处的点.##绘制n条垂直线,使得线i的两个端点位于(i,ai)和(i,0).##找到两条线,它们与x轴一起形成一个容器,这样容器就含有最多的水.##对于容器(i,j)宽j-i,高min(l[i-1],l[j-1]),def findcon(nl):    large,l,r,num=0,0,0,len(nl)    for i in range(num):        for j in range(1,num-i):…

题目: Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a cont…

A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents a zero or one, with the least significant bit on the right. For example, the above binary watch read…

Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive. For example, given the range [5, 7], you should return 4. Credits:Special thanks to @amrsaqr for adding this problem and creatin…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 这道题要求是复原IP地址,IP地…

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…

We are given N different types of stickers. Each sticker has a lowercase English word on it. You would like to spell out the given target string by cutting individual letters from your collection of stickers and rearranging them. You can use each sti…

There is a room with n lights which are turned on initially and 4 buttons on the wall. After performing exactly m unknown operations towards buttons, you need to return how many different kinds of status of the n lights could be. Suppose n lights are…