//
//  ViewController.m
//  sorttest
//
//  Created by zhangyifan on 2021/9/26.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    NSMutableArray *arrr = [NSMutableArray arrayWithObjects:@3,@5,@2,@0,@3, nil];
    
    NSArray *a = [self sortNum:arrr];
    
    [a enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
       
        NSLog(@"%@",obj);
    }];
}

- (NSArray *)sortNum:(NSMutableArray *)arr{
    for (int x = 0; x < arr.count; x++) {
        for (int i = 0; i < arr.count - 1; i++) {
            if ([arr[i] compare:arr[i+1]] == NSOrderedDescending) {
                [arr exchangeObjectAtIndex:i withObjectAtIndex:i+1];
            }
        }
    }
    return  [arr copy];
}


@end