如何将字符串@“ abc123.xyz789”倒置

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {

    @autoreleasepool {

       //如何将字符串@“ abc123.xyz789”倒置

        NSMutableString *str=@" abc123.xyz789";

        NSLog(@"原字符串为:%@",str);

        NSMutableArray *arr=[[NSMutableArray alloc]init];

        NSRange rang;

        for (int j=str.length-1; j+1 != nil; j--) {

            rang.location=j;

            rang.length=1;

            NSString *newStr3=[str substringWithRange:rang];

            //NSLog(@"%@",newStr3);

            [arr addObject:newStr3];

        }

        NSString *join=[arr componentsJoinedByString:@""];

        NSLog(@"倒置已后为:%@",join);

    }

    return 0;

}

如何将字符串@“ abc123.xyz789”倒置

原文：http://www.cnblogs.com/shaowenlong/p/5116683.html