Simple sorting of an array of dictionaries using the NSComparator block

gistfile1.m

    NSMutableArray *mutArry = [[NSMutableArray alloc] init];

    // Fill array with 20 dictionaries that each contain a NSNumber for key "num"
    for(int i = 0;i<20;i++){
    
        NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithInt:arc4random()%100], @"num", nil];
        [mutArry addObject:dict];
    
    }
    
    // Print out unsorted array
    NSLog(@"Unsorted array of dictionaries\n");
    for(NSDictionary *dict in mutArry){
        int i = [[dict objectForKey:@"num"] intValue];
        NSLog(@"%d\n",i);
    
    }
    
    // Use NSComparator block to return a sorted array
    NSArray *sorted = [mutArry sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
        
        int num1 = [[obj1 objectForKey:@"num"] intValue];
        int num2 = [[obj2 objectForKey:@"num"] intValue];
        if(num1<num2) return NSOrderedAscending;
        if(num1>num2) return NSOrderedDescending;
                
        return NSOrderedSame;
    }];
 
    // Print out sorted array
    NSLog(@"\nSorted array of dictionaries\n");
    for(NSDictionary *dict in sorted){
        int i = [[dict objectForKey:@"num"] intValue];
        NSLog(@"%d\n",i);
    }