独自クラスのArrayを指定のコード順に並べ替える（メモ）

　EntityItem*item1 = [[EntityItem alloc]init];
    item1.name = @"なまえ1";
    item1.code = @"id10";

    EntityItem*item2 = [[EntityItem alloc]init];
    item2.name = @"なまえ2";
    item2.code = @"id03";
    EntityItem*item3 = [[EntityItem alloc]init];
    item3.name = @"なまえ3";
    item3.code = @"id12";
    EntityItem*item4 = [[EntityItem alloc]init];
    item4.name = @"なまえ4";
    item4.code = @"id05";
    EntityItem*item5 = [[EntityItem alloc]init];
    item5.name = @"なまえ5";
    item5.code = @"id02";
//並び替える独自クラス入り配列
    NSArray *origin = @[item1,item2,item3,item4,item5];
    
//並び替えたいコードの順番    
    NSArray *sort = @[@"id02",@"id10",@"id03",@"id12",@"id05"];

 //並び替え
    NSArray *sortedArray = [origin sortedArrayWithOptions:NSSortConcurrent
                                           usingComparator:(NSComparator)^(EntityItem* obj1,EntityItem* obj2){
                                               NSUInteger index1=[sort indexOfObject:obj1.code];
                                               NSUInteger index2=[sort indexOfObject:obj2.code];
                                               if(index1>index2){
                                                   return NSOrderedDescending;
                                               }else {
                                                   return NSOrderedAscending;
                                               }
                                           }];

//並び変わった確認
    for(EntityItem*item in sortedArray){
        NSLog(@"code:%@",item.code);
    }