search array n give index

Mngaro Mwazenje

using System;
using System.Collections.Generic;
namespace exercise_79
{
class Program
{
public static void Main(string[] args)
{
// DO NOT CHANGE THE FOLLOWING CODE!
int[] array = new int[10];
array[0] = 6;
array[1] = 2;
array[2] = 8;
array[3] = 1;
array[4] = 3;
array[5] = 0;
array[6] = 9;
array[7] = 7;
Console.WriteLine("Search for?");
int searching = Convert.ToInt32(Console.ReadLine());
// Implement the search functionality here
}
}
}

The exercise template has already an array containing numbers. Complete the program to ask the user for a number to search in the array. If the array contains the given number, the program tells the index containing the number. If the array doesn't contain the given number, the program will tell the number wasn't found.

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Ravi Patel6y ago
Accepted answer
1. using System;
2. using System.Collections.Generic;
3. namespace exercise_79
4. {
5. class Program
6. {
7. public static void Main(string[] args)
8. {
9. // DO NOT CHANGE THE FOLLOWING CODE!
10. int[] array = new int[10];
11. array[0] = 6;
12. array[1] = 2;
13. array[2] = 8;
14. array[3] = 1;
15. array[4] = 3;
16. array[5] = 0;
17. array[6] = 9;
18. array[7] = 7;
19. Console.WriteLine("Search for?");
20. int searching = Convert.ToInt32(Console.ReadLine());
21. // Implement the search functionality here
23. int Index = Array.IndexOf(arr, searching);
24. if(Index>=0)
25. {
26. Console.WriteLine("Index of element=" +Index.Tostring());
27. } else
28. {
29. Console.WriteLine("number was not found.");
30. }
32. }
33. }
34. }
+1

Bhawna Tuteja6y ago

You can use IndexOf Property

Jignesh Kumar6y ago

Hi,

You can try below code which give you idex of entered element, Put breakpoint and try to understand code which will help you to understand how its working exactly

// DO NOT CHANGE THE FOLLOWING CODE!
int[] array = new int[10];
array[0] = 6;
array[1] = 2;
array[2] = 8;
array[3] = 1;
array[4] = 3;
array[5] = 0;
array[6] = 9;
array[7] = 7;
Console.WriteLine("Search for?");
int searching = Convert.ToInt32(Console.ReadLine());
// Implement the search functionality here
var indexofElementinArray = Array.IndexOf(array, searching);
if (indexofElementinArray == -1)
{
Console.WriteLine("the number wasn't found.");
}
else {
Console.WriteLine("Index of element " + searching + " is :" + indexofElementinArray.ToString());
}

Piyush Pansuriya6y ago

Hi, You can use Array.IndexOf.

Console.WriteLine("Search for?");
int searching = Convert.ToInt32(Console.ReadLine());
int index = Array.IndexOf(array, searching);
if(index>=0)
Console.WriteLine("Index of element=" + index.Tostring());
else
Console.WriteLine("number was not found.");

"index" will return the index of array..