Create Jump_search.cpp

Jump_search.cpp

@@ -0,0 +1,56 @@
+// C++ program to implement Jump Search 
+
+#include <bits/stdc++.h> 
+using namespace std; 
+
+int jumpSearch(int arr[], int x, int n) 
+{ 
+	// Finding block size to be jumped 
+	int step = sqrt(n); 
+
+	// Finding the block where element is 
+	// present (if it is present) 
+	int prev = 0; 
+	while (arr[min(step, n)-1] < x) 
+	{ 
+		prev = step; 
+		step += sqrt(n); 
+		if (prev >= n) 
+			return -1; 
+	} 
+
+	// Doing a linear search for x in block 
+	// beginning with prev. 
+	while (arr[prev] < x) 
+	{ 
+		prev++; 
+
+		// If we reached next block or end of 
+		// array, element is not present. 
+		if (prev == min(step, n)) 
+			return -1; 
+	} 
+	// If element is found 
+	if (arr[prev] == x) 
+		return prev; 
+
+	return -1; 
+} 
+
+// Driver program to test function 
+int main() 
+{ 
+	int arr[] = { 0, 1, 1, 2, 3, 5, 8, 13, 21, 
+				34, 55, 89, 144, 233, 377, 610 }; 
+	int x = 55; 
+	int n = sizeof(arr) / sizeof(arr[0]); 
+
+	// Find the index of 'x' using Jump Search 
+	int index = jumpSearch(arr, x, n); 
+
+	// Print the index where 'x' is located 
+	cout << "\nNumber " << x << " is at index " << index; 
+	return 0; 
+} 
+
+// Contributed by nuclode