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Copy pathBinarySearch.java
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35 lines (35 loc) · 783 Bytes
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import java.util.*;
public class BinarySearch
{
public static void binarySearch(int arr[], int first, int last, int key)
{
int mid = (first + last)/2;
while( first <= last )
{
if ( arr[mid] < key )
{
first = mid + 1;
}
else if ( arr[mid] == key )
{
System.out.println("Element is found at index: " + mid);
break;
}else
{
last = mid - 1;
}
mid = (first + last)/2;
}
if ( first > last )
{
System.out.println("Element is not found!");
}
}
public static void main(String args[]){
int arr[] = {10,20,30,40,50};
int key = 30;
int last=arr.length-1;
binarySearch(arr,0,last,key);
}
}
//Contributed by Ashwin//