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数据更新时的Key值判断(C#)
今天在工作过程中遇到下面的小问题,在更新数据时我想检查该数据Key是否已经存在,如果不存在则直接添加,否则则根据其他状态再判断是否需要更新。这就需要首先获取已经存在的Key的集合。可以使用以下方法实现,比如Key值为一个字符串。List检查方法为Contains,该方法会遍历List的中的某一个值进...
分类:其他好文   时间:2014-09-20 14:03:07    阅读次数:204
Leetcode: Valide Binary Search Tree
Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only n...
分类:其他好文   时间:2014-09-19 04:28:05    阅读次数:247
将银行大写数字转换为纯数字
/** * * @Description: 将“壹仟”格式转换成1000 * @param * @return int * @throws */ public static int getMoneyFromString(String string) { int result = 0; if (string.contains("亿")) { int in...
分类:其他好文   时间:2014-09-18 18:58:24    阅读次数:161
[leetcode] Validate Binary Search Tree (检验是否为二叉查找树) Python
Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only n...
分类:编程语言   时间:2014-09-18 11:24:13    阅读次数:379
Leetcode: Copy List with Random Pointer
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy ...
分类:其他好文   时间:2014-09-18 04:21:33    阅读次数:228
算法6-5:哈希表应用之集合
能够通过哈希表实现高效的集合操作。接口一个集合对象能够包括了下面接口:public interface Set> { public void add(Key key); public boolean contains(Key key); public void remove(Key...
分类:其他好文   时间:2014-09-16 00:07:49    阅读次数:237
EL表达式截取字符串
${wjcd.lrsj}原来得到的是如2006-11-12 11:22:22.0${fn:substring(wjcd.lrsj, 0, 16)}使用functions函数来获取list的长度${fn:length(list)} fn:contains(string, substring) ...
分类:其他好文   时间:2014-09-15 22:34:29    阅读次数:317
LeetCode Clone Graph
Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbors.OJ's undirected graph serialization:Nodes are labeled uniq...
分类:其他好文   时间:2014-09-15 21:09:39    阅读次数:216
Invalid code signing entitlements. Your application bundle's signature contains
http://code4app.com/requirement/54128041933bf0e0308b5204Invalid code signing entitlements. Your application bundle's signature contains code signing e...
分类:移动开发   时间:2014-09-15 15:51:59    阅读次数:335
数组去重
public static void main(String[] args) { String a = "a"; String[] F = { "A", "B", "C" }; List s = Arrays.asList(F);//数组转List if(s.contains(a)...
分类:其他好文   时间:2014-09-15 12:49:48    阅读次数:194
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