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Add Binary_Search #1

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39 changes: 39 additions & 0 deletions Sorting Algorithm/binary_search_recursive.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
#include <bits/stdc++.h>
using namespace std;
int main()
{
int arr[]={2,3,4,10,40};
int x=10;
int n=sizeof(arr)/sizeof(arr[0]);
int result=binarySearch(arr,0,n-1,x);
if(result==-1)
{
cout<<"element is not present in the array";
}
else
{
cout<<"element is present in the array";
}
return 0;
}

int binarySearch(int arr,int l,int r,int x)
{
if(r>=l)
{
int mid=l+(r-l)/2;
if(arr[mid]==x)
{
return mid;
}
else if(arr[mid]>x)
{
return binarySearch(arr,l,mid-1,x);
}
else
{
return binarySearch(arr,mid+1,r,x);
}
return -1;
}