NSString 与 NSArray 的相互转换

//

//  main.m

//  NSArray 与 NSString

//

//  Created by apple on 15/9/18.

//  Copyright (c) 2015年 apple. All rights reserved.

//

#import <Foundation/Foundation.h>

int main1(int argc,
const char * argv[]) {

    @autoreleasepool {

//1,将数组元素连接成字符串

    NSArray *arr=@[@"敏感词",@"社团",@"和谐"];

        NSString *str=[arr
componentsJoinedByString:@"|"];
       
NSLog(@"str = %@",str);
       }
   
return 0;
}
int main(int argc,
const char * argv[]) {

    @autoreleasepool {

//2,将字符串拆成数组

// -(NSArray *)componentsSeparatedByString:(NSString *)separator;

        NSArray *arr = [@"1,2,3,4,5,6,7,8"
componentsSeparatedByString:@","];
       
NSLog(@"%@",arr);
            }
   
return 0;
}