Hygeia

摘要： Given two binary strings, return their sum (also a binary string).For example,a="11"b="1"Return"100". 1 public String addBinary(String a, String b... 阅读全文

摘要： Given a column title as appear in an Excel sheet, return its corresponding column number.For example:A -> 1B -> 2C -> 3…Z -> 26AA -> 27AB -> 28[分析]26进... 阅读全文

摘要： Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive integer... 阅读全文

摘要： 题目：Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers be palindromes?... 阅读全文

摘要： 用到的Class和methods：1. 类String(1)charAtString s;s.charAt(i);(2)split分割一个String用split:publicString[]split(Stringregex)RegexResult:{ "boo", "and", "foo" }o... 阅读全文

摘要： For a given sorted array (ascending order) and a target number, find the first index of this number in O(log n) time complexity.If the target number d... 阅读全文

摘要： Given a rotated sorted array, recover it to sorted array in-place.Have you met this question in a real interview?YesWhich company asked you this quest... 阅读全文

摘要： Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or... 阅读全文

摘要： Find the total area covered by tworectilinearrectangles in a2Dplane.Each rectangle is defined by its bottom left corner and top right corner as shown ... 阅读全文

摘要： 1、题目名称Ugly Number II（丑数2：找出第n个丑数）2、题目地址https://leetcode.com/problems/ugly-number-ii/3、题目内容英文：Write a program to find then-th ugly number.中文：写程序找出第n个丑数... 阅读全文