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mysql 更新或插入
INSERT … ON DUPLICATE KEY UPDATE 语句MySQL 自4.1版以后开始支持INSERT … ON DUPLICATE KEY UPDATE语法,使得原本需要执行3条SQL语句(SELECT,INSERT,UPDATE),缩减为1条语句即可完成。INSERT ... O....
分类:数据库   时间:2015-06-08 14:54:55    阅读次数:122
LeetCode:Contains Duplicate II
Problems:Given an array of integers and an integer k, find out whether there there are two distinct indices i and j in the array such that nums[i] = n...
分类:其他好文   时间:2015-06-08 12:58:28    阅读次数:119
Contains Duplicate II ——LeetCode
Given an array of integers and an integerk, find out whether there there are two distinct indicesiandjin the array such thatnums[i] = nums[j]and the d...
分类:其他好文   时间:2015-06-08 01:03:23    阅读次数:406
Remove Duplicates from Sorted List II ——LeetCode
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list.For example,Given1->2->3-...
分类:其他好文   时间:2015-06-07 23:31:44    阅读次数:129
LeetCode Contains Duplicate III
Given an array of integers, find out whether there are two distinct indicesiandjin the array such that the difference betweennums[i]andnums[j]is at mo...
分类:其他好文   时间:2015-06-07 12:34:31    阅读次数:123
[LeetCode] Min Stack
The idea is to usetwo stacks.Forpush, the first stack records the pushed elements and the second stack recordsallthe minimum (including duplicates) th...
分类:其他好文   时间:2015-06-07 06:10:12    阅读次数:111
Contains Duplicate II
1 struct Rec 2 { 3 int dig, ind; 4 }; 5 bool cmp(struct Rec a,struct Rec b) 6 { 7 if(a.dig!=b.dig) 8 return a.dig& nums, int k) {14 ...
分类:其他好文   时间:2015-06-06 19:35:02    阅读次数:98
[LeetCode] Contains Duplicate(II,III)
Contains DuplicateGiven 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 array, and it should return false if...
分类:其他好文   时间:2015-06-06 18:15:25    阅读次数:494
LeetCode Contains Duplicate III
LeetCode Contains Duplicate III题目思路我的方法是先用一个结构体,存下每个数字的值和其原坐标; 然后根据值大小排序; 接着遍历每一个数字num[i].val; 利用二分查找找到刚好比num[i].val - t - 1大的数字的坐标; 然后根据坐标判断是否存在值即可; 关于二分查找可见:Binary Search代码struct num { int p...
分类:其他好文   时间:2015-06-06 09:09:47    阅读次数:96
Contains Duplicate II
https://leetcode.com/problems/contains-duplicate-ii/Given an array of integers and an integerk, find out whether there there are two distinct indicesi...
分类:其他好文   时间:2015-06-06 00:17:46    阅读次数:165
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