如何找到两个字符串之间的子串？ [英] How to find the substring between two string?

问题描述

我有一个字符串你好......你怎么样

I have a string "hi how are... you"

我想在你之前和之后找到子字符串..

I want to find the Sub-string after how and before you..

如何在目标c中执行此操作？

How to do this in objective c?

推荐答案

查找两者的范围字符串并返回其间的子字符串：

Find the range of the two strings and return the substring in between:

NSString *s = @"hi how are... you";

NSRange r1 = [s rangeOfString:@"how"];
NSRange r2 = [s rangeOfString:@"you"];
NSRange rSub = NSMakeRange(r1.location + r1.length, r2.location - r1.location - r1.length);
NSString *sub = [s substringWithRange:rSub];

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