排序字典和更改索引

Question

在我的应用程序，我有一本字典有两个阵列，如：

NSDictionary *d=[[NSDictionary alloc]initWithObjectsAndKeys:listOfEvents,@"l",arr_distance,@"d", nil]; 
     NSLog(@"%@",d); 


d =  (
    "353.90", 
    "354.68", 
    "350.42", 
    "1.18" 
); 
l =  (
      { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      } 
); 
} 

我想排序与第一阵列的字典，当指数的变化，第二个数组索引也根据它改变。

这两个数组索引是相互关联的。

@ABC你试过代码

NSDictionary *dict = [NSDictionary dictionaryWithObjects:listOfEvents forKeys:arr_distance]; 
     NSArray *sortedArray = [arr_distance sortedArrayUsingSelector:@selector(compare:)]; 
     NSMutableArray *sortedValues = [NSMutableArray array]; 

    for (NSString *key in sortedArray) { 
     [sortedValues addObject:[dict valueForKey:key]]; 
    } 

    NSLog(@"%@",sortedValues); 

结果：

{ 1.18,2563.91,2563.41,2563.39,350,353,354}

Answer 1

这里是一个办法做到这一点，

NSArray *a = [NSArray arrayWithObjects:@"8", @"2", @"4", nil]; 
    NSArray *b = [NSArray arrayWithObjects:@"val1", @"val2", @"val3", nil];//This can be an array of any objects 

或

a = ["353.90", "354.68", "350.42", "1.18"]; 
b = [{ 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
      }, 
     { 
     Contestant1 = "Jon jones"; 
     Contestant2 = "Anderson silva"; 
     }]; 

像这样做，

NSDictionary *dict = [NSDictionary dictionaryWithObjects:b forKeys:a]; 
    NSArray *sortedArray = [a sortedArrayUsingComparator:^(id firstObject, id secondObject) { 
     return [((NSString *)firstObject) compare:((NSString *)secondObject) options:NSNumericSearch]; 
    }]; 
    NSMutableArray *sortedValues = [NSMutableArray array]; 

    for (NSString *key in sortedArray) { 
     [sortedValues addObject:[dict valueForKey:key]]; 
    } 

    NSLog(@"%@",sortedValues);