Easy csharp

Linear search 13 #39

Problem

Index of 13 or -1.

Hints

Loop compare

Your practice code

Ready — edit the code above and click Run.

Solution

using System;

class Program
{
    static void Main()
    {
        int[] arr = { 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 }; int target = 13;
        int idx = -1;
        for (int j = 0; j < arr.Length; j++) if (arr[j] == target) { idx = j; break; }
        Console.WriteLine(idx);
    }
}

Try solving on your own first, then reveal the official answer.

Explanation

Linear search O(n).

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