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Create binarysearch #166

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Create binarysearch #166

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25 changes: 25 additions & 0 deletions binarysearch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
class BinarySearchExample{
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);
}
}