摘要：
Given a string, find the first non repeating character in it and return it's index. If it doesn't exist, return 1. Examples: Note: You may assume the 阅读全文
2017年10月17日
摘要：
Given an array of size n, find the majority element. The majority element is the element that appears more than times. You may assume that the array i 阅读全文
2017年10月13日
摘要：
先放一条mysql的导出语句 PG提供了数据导出功能pg_dump，但是不能直接将函数导出。思路是将表的结构导出，过滤出函数名，再解析出函数的sql语句。上面是提供的参数及其含义 具体方法如下： 阅读全文
2017年10月12日
摘要：
Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie. Each child i has a g 阅读全文
摘要：
工作时候需要模拟shell来执行任务，借助包 "paramkio" 阅读全文
2017年10月11日
摘要：
Find the sum of all left leaves in a given binary tree. Example 求二叉树左边叶子的和 这类题目无非就是对二叉树的遍历上面做文章，最简单的方法就是递归求解，牢记遍历时候的套路。下面是使用非递归方式，借用stack 阅读全文
2017年10月4日
摘要：
Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function 阅读全文
摘要：
Given a binary search tree with non negative values, find the minimum absolute difference between values of any two nodes. Example: 题目要求找到二叉搜索树中，节点之间最 阅读全文
2017年9月30日
摘要：
Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may comple 阅读全文
摘要：
Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction 阅读全文
