using System;
class Program
{
public static int Linear_Search(int[] arr, int data) {
for (int i = 0; i < arr.Length; i++) {
if (data == arr[i])
return i;
}
return -1;
}
static void Main() {
int[] arr = { 4, 9, 78, 99, 10, 1200, 300 };
int index = Linear_Search(arr, 99);
Console.Write(index);
}
}
/*
run:
3
*/