选择排序

+ (void)sort:(NSMutableArray*)array{
    int i ,y,min;
    for(i = 0;i < [array count];i++){
        min=i;
        for(y = i + 1 ; y < [array count];y++){
            if([[array objectAtIndex:min]intValue]>[[array objectAtIndex:y]intValue]){
                min=y;
                }
            }
        if(min != i){
            [array exchangeObjectAtIndex:i withObjectAtIndex:min];
            }
        }
    NSLog(@"%@",array);
}```