Question

OC将字符串中的数字去掉,字母转为大写:@"0go08o32d"

使用

NSString或NSMutableString

Answer 1

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

{

@autoreleasepool {

//@"aaabbccccdd"输出成@"3a2b4c2d

NSString *str =@"0go08o32d";

NSMutableString *mstr = [NSMutableString stringWithCapacity:0];

for (int i=0; i<str.length; i++) {

char a = [str characterAtIndex:i];

if (a>='a'&&a<='z') {

a=a-32;

[mstr appendFormat:@"%c",a];

}

}

NSLog(@"%@",mstr);

}

return 0;

}