NSArray （多种数组元素排序）_nsarray 字母+数字排序-优快云博客

本文介绍了使用 Objective-C 进行数组排序的方法，包括数字排序、字母排序及包含字典的数组排序。提供了升序与降序的具体实现，并展示了如何通过 NSSortDescriptor 对数组进行定制化排序。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

#pragma mark - 数字排序

-(void)numArrayOnly
{
    //数值排序
    NSArray *sortArray = [[NSArray alloc] initWithObjects:@"1",@"3",@"4",@"7",@"8",@"2",@"6",@"5",@"13",@"15",@"12",@"20",@"28",@"",nil];
    
    NSArray *array = [sortArray sortedArrayUsingComparator:comparAsc];
    
}


//数值降序排序
NSComparator comparDes = ^(id obj1, id obj2){
    if ([obj1 integerValue] > [obj2 integerValue]) {
        return (NSComparisonResult)NSOrderedDescending;
    }
    
    if ([obj1 integerValue] < [obj2 integerValue]) {
        return (NSComparisonResult)NSOrderedAscending;
    }
    return (NSComparisonResult)NSOrderedSame;
};


//数值升序排序
NSComparator comparAsc = ^(id obj1, id obj2){
    if ([obj1 integerValue] > [obj2 integerValue]) {
        return (NSComparisonResult)NSOrderedAscending;
    }
    
    if ([obj1 integerValue] < [obj2 integerValue]) {
        return (NSComparisonResult)NSOrderedDescending;
    }
    return (NSComparisonResult)NSOrderedSame;
};

#pragma mark - 数字排序二

//数值排序 二  ascending YES=升序   NO=降序
    NSArray *sortDesc = @[[[NSSortDescriptor alloc] initWithKey:nil ascending:NO]];
    NSArray *sortSetArray = [sortArray sortedArrayUsingDescriptors:sortDesc];

#pragma mark - 字母排序

-(void)stringOnly
{
    //字母排序
    NSArray *sortArray2 = [[NSArray alloc] initWithObjects:@"a",@"bc",@"e",@"f",@"d",@"w",@"q",@"x",@"z",@"y",@"u",@"i",@"k",@"aa",nil];
    
    NSArray *array = [sortArray2 sortedArrayUsingSelector:@selector(compare:)];
    
    
}

#pragma mark - 数组包含字典排序顺序

-(void)arrayAndDic
{

        NSArray *ary1 = [NSArray arrayWithObjects:@"5",@"4",@"3",@"2",@"1", nil];
        NSArray *ary2 = [NSArray arrayWithObjects:@"4",@"3",@"2",@"1", nil];
        NSArray *ary3 = [NSArray arrayWithObjects:@"3",@"2",@"1", nil];
        NSArray *ary4 = [NSArray arrayWithObjects:@"2",@"1", nil];
        NSArray *ary5 = [NSArray arrayWithObjects:@"1", nil];
        
        NSDictionary *dic1 = [NSDictionary dictionaryWithObjectsAndKeys:ary1,@"value",@"2015820",@"index",nil];
        NSDictionary *dic2 = [NSDictionary dictionaryWithObjectsAndKeys:ary5,@"value",@"2015810",@"index",nil];
        NSDictionary *dic3 = [NSDictionary dictionaryWithObjectsAndKeys:ary4,@"value",@"2015828",@"index",nil];
        NSDictionary *dic4 = [NSDictionary dictionaryWithObjectsAndKeys:ary3,@"value",@"2015824",@"index",nil];
        NSDictionary *dic5 = [NSDictionary dictionaryWithObjectsAndKeys:ary2,@"value",@"2015805",@"index",nil];
        NSMutableArray *listAry = [NSMutableArray arrayWithObjects:dic1,dic2,dic3,dic4,dic5, nil];
        
        //数组排序
        NSArray *sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"index" ascending:YES]];
        [listAry sortUsingDescriptors:sortDescriptors];

}