Black_Knight

摘要： Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the 阅读全文

摘要： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr 阅读全文

摘要： Find the total area covered by two rectilinear rectangles in a 2D plane. Each rectangle is defined by its bottom left corner and top right corner as s 阅读全文

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 阅读全文

摘要： You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality c 阅读全文

摘要： Given an integer, write a function to determine if it is a power of two. Credits:Special thanks to @jianchao.li.fighter for adding this problem and cr 阅读全文

摘要： Java对数函数的计算方法非常有问题，然而在API中却有惊人的误差。但是假如运用了以下的方法，用Java处理数字所碰到的小麻烦就可以轻而易举的解决了。 Sun的J2SE提供了一个单一的Java对数方法——double java.lang.Math.log(double)，这很轻易使用。请看如下代码： 阅读全文