摘要： Write a function to find the longest common prefix string amongst an array of strings.方法1:BF, 首先计算两个字符串的prefix，每次用这个prefix与下一个字符串生成新的prefix效果较差，大数据集直接挂了，代码可读性太差-_-! 1 public String longestCommonPrefix(String[] strs) { 2 // Start typing your Java solution below 3 // DO NOT write main(... 阅读全文

摘要： Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of lineiis at (i,ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.Note: You 阅读全文

摘要： Determine whether an integer is a palindrome. Do this without extra space.Some hints:Could negative integers be palindromes? (ie, -1)If you are thinking of converting the integer to string, note the restriction of using extra space.You could also try reversing an integer. However, if you have solved 阅读全文

摘要： Implementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases.Notes:It is intended for this problem to be specified vaguely (ie, no given input specs). You are respo 阅读全文