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问题描述： You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the qua 阅读全文
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问题描述： Given a non-negative number represented as an array of digits, plus one to the number. The digits are stored such that the most significant digi 阅读全文
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问题描述： Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 分析：将一个整数逆序输出，需要判断是否越界。Integer.MAX_VALUE，Integer.MIN_V 阅读全文
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问题描述： Given an integer, write a function to determine if it is a power of two. 问题分析：给定一个数，判断它是不是2的幂。因为2的幂 >= 0 ，所以是针对非负数的。那么这个数 %2为0 代码： 阅读全文
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算法描述： Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra sp 阅读全文