在一个阵列寻找重复整数并显示他们发生了多少次 [英] Finding duplicate integers in an array and display how many times they occurred

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问题描述

我工作的一个code,从与他们发生次数阵列打印出重复的整数。我不能使用LINQ,只是一个简单的code。我想我是如此接近,但关于如何得到正确的输出困惑:

 类节目
{
    静态无效的主要(字串[] args)
    {
        INT []数组= {10,5,10,2,2,3,4,5,5,6,7,8,9,11,12,12};
        诠释计数= 1;
        的for(int i = 0; I< array.Length;我++)
        {
            对于(INT J =; J< array.Length - 1; J ++)
            {               如果(阵列[J] ==阵列[J + 1])
                  数=计+ 1;
            }
            Console.WriteLine(\\ t \\ n+阵列[I] +occurse+计数);
            Console.ReadKey();
        }
    }
}


解决方案

既然你不能使用LINQ,你可以用集合做到这一点,而不是循环:

 静态无效的主要(字串[] args)
{
    INT []数组= {10,5,10,2,2,3,4,5,5,6,7,8,9,11,12,12};
    VAR字典=新词典< INT,INT>();    的foreach(数组VAR值)
    {
        如果(dict.ContainsKey(值))
            字典[值] ++;
        其他
            字典[值] = 1;
    }    的foreach(在字典VAR对)
        Console.WriteLine(值{0}发生{1}次。pair.Key,pair.Value);
    Console.ReadKey();
}

I'm working on a code that prints out duplicated integers from an array with the number of their occurrence. I'm not allowed to use LINQ, just a simple code. I think I'm so close but confused about how to get a correct output:

class Program
{
    static void Main(string[] args)
    {              
        int[] array = { 10, 5, 10, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 11, 12, 12 };
        int count = 1;
        for (int i = 0; i < array.Length; i++)
        {
            for (int j = i; j < array.Length - 1 ; j++)
            {

               if(array[j] == array[j+1])
                  count = count + 1;
            }
            Console.WriteLine("\t\n " + array[i] + "occurse" + count);
            Console.ReadKey();
        }
    }
}

解决方案

Since you can't use LINQ, you can do this with collections and loops instead:

static void Main(string[] args)
{              
    int[] array = { 10, 5, 10, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 11, 12, 12 };
    var dict = new Dictionary<int, int>();

    foreach(var value in array)
    {
        if (dict.ContainsKey(value))
            dict[value]++;
        else
            dict[value] = 1;
    }

    foreach(var pair in dict)
        Console.WriteLine("Value {0} occurred {1} times.", pair.Key, pair.Value);
    Console.ReadKey();
}

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