如何让一个数组中的字典,如果字典中有重复的id.将重复的id的字典进行数组整合...。

(NSMutableArray )arrmodel:(NSMutableArray )array{

NSMutableArray *resrarray = [[NSMutableArray alloc]init];
resrarray = [NSMutableArray array];
[resrarray addObject:array[0]];
[array removeObjectAtIndex:0];
for (NSDictionary *dic in array) {

NSInteger index = 0;
for (NSDictionary *dicv in resrarray) {
    if (dic[@"goods"][@"id"] == dicv[@"goods"][@"id"]) {
        NSMutableDictionary *dics = [NSMutableDictionary dictionary];
        [dics setDictionary:dicv];
        NSInteger number = [dics[@"num"] integerValue] + 1;
        [dics setValue:[NSString stringWithFormat:@"%ld",number] forKey:@"num"];
        [resrarray replaceObjectAtIndex:index withObject:dics];
    }else{
        [resrarray addObject:dicv];
    index++;
}
return resrarray;
}
把数组换成模型就好了，我也是刚好要做这个