reverse an array

Valerie Meunier

I try to reverse sort values in an array, but this code doesn't work. No error, but this is what i get: 4 85 6 99 etc ...

What's wrong with my code?

Thanks

public static void Main()
{
int[] array = { 2, 11, 15, 1, 7, 99, 6, 85, 4 };
Array.Reverse(array); // Reverse Sorting array value
foreach (var result in array)
{
Console.Write(result + " "); // Array values
}

}

7 Replies

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Ganesan C5y ago
Accepted answer
If yo want to reverse the sorted array then first sort and reverse. You are right.
+2
Sagar Lad5y ago
Hi Valerie,

You can check this : https://www.softwaretestinghelp.com/reverse-an-array-in-java/
+1
Valerie Meunier5y ago
Thanks
+2
Valerie Meunier5y ago
Hi thanks for repying.

1) Jignesh Kumar : i get the same as i got: 4 85 6 99 7 1 ... Did you try this yourself?

2) Ganesan C and Md Sarfaraj : i also get the same as i got: 4 85 5 99 7 1 ... Please, try yourself.
Now, If i add this between line 82 and 83: Array.Sort(arr); then it works!!
So my conclusion is: first sort the numbers, then take the reverse of those numbers.
Do you agree with this?
Thanks
+2
Ganesan C5y ago
1. static void Main() {
2. int[] arr = { 2, 11, 15, 1, 7, 99, 6, 85, 4 };
3. Console.WriteLine("Before Reverse");
4. foreach (int i in arr) {
5. Console.WriteLine(i);
6. }
8. // Reverse Array
9. Array.Reverse(arr);
10. Console.WriteLine("After Reverse");
11. foreach (int j in arr) {
12. Console.WriteLine(j);
13. }
14. Console.ReadLine();
15. }
+1

Md Sarfaraj5y ago

int[] arr = { 15, 16, 17, 18 };
// Original Array
Console.WriteLine("Original Array= ");
foreach (int i in arr) {
Console.WriteLine(i);
}
// Reverse Array
Array.Reverse(arr);
Console.WriteLine("Reversed Array= ");
foreach (int j in arr) {
Console.WriteLine(j);
}
Console.ReadLine();

Jignesh Kumar5y ago

Hi,

You can do like below, I think you have not printed values,

int[] array = { 2, 11, 15, 1, 7, 99, 6, 85, 4 };
Array.Sort(array);
Array.Reverse(array); // Reverse Sorting array value
Console.WriteLine(String.Join(',', array));