iOS学习-字符串的删除替换

字符串的常用处理，删除，替换。记录一下，方便查找。

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- (void)viewDidLoad {
    [super viewDidLoad];
   
    NSString *str1 = @"<hello,wo  r d!>"; //删除字符串两端的尖括号 NSMutableString *mString = [NSMutableString stringWithString:str1]; //第一个参数是要删除的字符的索引，第二个是从此位开始要删除的位数 [mString deleteCharactersInRange:NSMakeRange(0, 1)]; [mString deleteCharactersInRange:NSMakeRange(mString.length-1, 1)]; NSLog(@"mString:%@",mString); //删除字符串中的空格 NSString *str2 = [mString stringByReplacingOccurrencesOfString:@" " withString:@""]; NSLog(@"str2:%@",str2); //同样的可以替换字符 NSString *str3 = [str2 stringByReplacingOccurrencesOfString:@"," withString:@"好"]; NSLog(@"str3:%@",str3); //替换某一位置的字符 NSString *str4 = [str3 stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:@"哈哈"]; NSLog(@"str4:%@",str4); }

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字符串的常用处理，删除，替换。记录一下，方便查找。

- (void)viewDidLoad {
    [super viewDidLoad];
   
    NSString *str1 = @"<hello,wo  r d!>"; //删除字符串两端的尖括号 NSMutableString *mString = [NSMutableString stringWithString:str1]; //第一个参数是要删除的字符的索引，第二个是从此位开始要删除的位数 [mString deleteCharactersInRange:NSMakeRange(0, 1)]; [mString deleteCharactersInRange:NSMakeRange(mString.length-1, 1)]; NSLog(@"mString:%@",mString); //删除字符串中的空格 NSString *str2 = [mString stringByReplacingOccurrencesOfString:@" " withString:@""]; NSLog(@"str2:%@",str2); //同样的可以替换字符 NSString *str3 = [str2 stringByReplacingOccurrencesOfString:@"," withString:@"好"]; NSLog(@"str3:%@",str3); //替换某一位置的字符 NSString *str4 = [str3 stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:@"哈哈"]; NSLog(@"str4:%@",str4); }

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