oc 冒泡排序

-(void)clickButtonAction{

if (self.textField.text.length<1) {
    return;
}
    NSMutableArray * arrayStr = [[NSMutableArray alloc]init];
    for (int i = 0; i < self.textField.text.length; i++) {
        unichar character = [self.textField.text characterAtIndex:i];
        [arrayStr addObject:@(character - '0')];
//            NSString *finalStr = [self.textField.text substringWithRange:NSMakeRange(i,1)];
//            [arrayStr addObject:finalStr];

    }
NSMutableArray * array = [NSMutableArray arrayWithArray:arrayStr];
    for (int i = 0; i<array.count-1; i++) {
        for (int j =0; j<array.count-1-i; j++) {
            if ([array[j] intValue] > [array[j+1] intValue]) {
                [array exchangeObjectAtIndex:j withObjectAtIndex:j + 1];
            }
        }
    }
NSLog(@"从小大到大排序=%@",array);

}