2

 NSMutableArray *newarr=[NSMutableArray arrayWithArray:shoppingCart];
       
       
//        NSUInteger count1=[set countForObject:@"iPod5"];
//        NSUInteger count2=[set countForObject:@"iPhone6s"];
//        NSUInteger count3=[set countForObject:@"iPhone6"];
        int count1=0,count2=0,count3=0;
        for(NSDictionary *dic in newarr){
            if([dic[keyProductName] isEqual:@"iPod5"]){
                
                count1++;
            }
            if([dic[keyProductName] isEqual:@"iPhone6"]){
                count2++;
            }
            if([dic[keyProductName] isEqual:@"iPhone6s"]){
                count3++;
            }
        }
        NSSet *set=[NSSet setWithArray:newarr];
        for(NSDictionary *dic in set){
        int coun=[dic[keyProductPrice] intValue];
            if([dic[keyProductName] isEqual:@"iPod5"]){
                NSLog(@"商品名称：%@,数量：%d,单价：%@,合计：%d",dic[keyProductName],count1,dic[keyProductPrice],count1*coun);}
            if([dic[keyProductName] isEqual:@"iPhone6"]){
                NSLog(@"商品名称：%@,数量：%d,单价：%@,合计：%d",dic[keyProductName],count2,dic[keyProductPrice],count2*coun);
            }
            if([dic[keyProductName] isEqual:@"iPhone6s"]){
                NSLog(@"商品名称：%@,数量：%d,单价：%@,合计：%d",dic[keyProductName],count3,dic[keyProductPrice],count3*coun);
            }
        }