Minumum value from compare of two arrays on each elements in c#

Question

I have below which is working for the 1st element...I just can't figure out how to do it for all elements on the arrays... thanks in advance

        int[] ListNumb1 = new int[] { 2, 4, 6 };
        int[] ListNumb2 = new int[] { 3, 1, 9 };


        if (ListNumb1[0] < ListNumb2[0])
        {
            Console.WriteLine(ListNumb1[0]);
        }
        else
            Console.WriteLine(ListNumb2[0]);




        Console.ReadLine();

Answer 1

You can use the Enumerable.Zip method to zip the 2 collections (arrays) together, and Math.Min to get the lowest value.

var result = ListNumb1.Zip(ListNumb2, Math.Min)

Full Example

int[] ListNumb1 = new int[] { 2, 4, 6 };
int[] ListNumb2 = new int[] { 3, 1, 9 };

// Result will be an IEnumerbale<int>
var result = ListNumb1.Zip(ListNumb2, Math.Min)

Console.WriteLine(string.Join(",", result));

Output

2,1,6

_{Note : To get the output in an array, just Call ListNumb1.Zip(ListNumb2, Math.Min).ToArray()}

---

Or you could use a classic for loop

// Allocate the array
var results = new int[ListNumb1.Length];

// Iterate over each element in both arrays
for (var i = 0; i < ListNumb1.Length; i++)
   results[i] = Math.Min(ListNumb1[i], ListNumb2[i]);

_{Note 2 : Both these examples assume the arrays are of equal length, if that is not that case, you will need to validate and act accordingly}

---

Additional resources

• Enumerable.Zip Method

  Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.

• Math.Min Method

  Returns the smaller of two numbers.

• String.Join Method

  Concatenates the elements of a specified array or the members of a collection, using the specified separator between each element or member.