`// Java implementation of iterative Binary Search
import java.io.*;
class BinarySearch {
// Returns index of x if it is present in arr[].
int binarySearch(int arr[], int x)
{
int low = 0, high = arr.length - 1;
while (low <= high) {
int mid = low + (high - low) / 2;
// Check if x is present at mid
if (arr[mid] == x)
return mid;
// If x greater, ignore left half
if (arr[mid] < x)
low = mid + 1;
// If x is smaller, ignore right half
else
high = mid - 1;
}
// If we reach here, then element was
// not present
return -1;
}
// Driver code
public static void main(String args[])
{
BinarySearch ob = new BinarySearch();
int arr[] = { 2, 3, 4, 10, 40 };
int n = arr.length;
int x = 10;
int result = ob.binarySearch(arr, x);
if (result == -1)
System.out.println(
"Element is not present in array");
else
System.out.println("Element is present at "
+ "index " + result);
}
}
`
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