-
判断一个数是否存在一个数组中
一:判断存在及在数组的位子,使用
Array.BinarySearch 方法
string item = "1,2,3,4,5";
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
string[] array = item.Split( new char[]
{ ',' } );
string a = "1";
int b = Array.BinarySearch( array, a );
if( b < 0 )
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
Response.Write( "不存在!" );
}
else
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
Response.Write( "在数组的第" + b + "位!" );
}
二
string item = "1,2,3,4,5";
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
string[] array = item.Split( new char[]
{ ',' } );
string a = "1";
for( int i = 0; i < array.Length; i++ )
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
if( array[ i ].Equals( a ) )
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
Response.Write( "存在" );
break;
}
}
-
相关阅读:
关于最近
Cryptography Application Block
关于修改SQL SERVER 登陆模式
我与软件工程
JAVA之路(一)
C#基础:类的继承与多态
简述java语言的特点
简述java虚拟机的工作原理
阿里云盾特点及防DDoS攻击服务介绍
智能DNS
-
原文地址:https://www.cnblogs.com/Magicam/p/1215994.html
Copyright © 2020-2023
润新知