Merge pull request #79 from yanurag1414/Search-Rotated-Sorted-Array

Adding search in rotated sorted array

DSA_Codesheet/Java/SearchRotatedSorted.java

@@ -0,0 +1,44 @@
+import java.util.Scanner;
+public class SearchRotatedSorted {
+    public static void main(String[] args) {
+        Scanner s = new Scanner(System.in);
+        System.out.println("Enter the size of the rotated sorted array:");
+        int n = s.nextInt();
+        System.out.println("Enter the elements of the rotated sorted array:");
+        int[] arr = new int[n];
+        for (int i = 0; i < n; i++) {
+            arr[i] = s.nextInt();
+        }
+        System.out.println("Enter the target element to search:");
+        int target = s.nextInt();
+        s.close();
+        searchRotated(arr,n,target);
+
+    }
+    static void searchRotated(int[] arr,int n,int target){
+        int low = 0;
+        int high = n-1;
+        while (low<=high){
+            int mid = low+(high-low)/2;
+            if(arr[mid]==target){
+                System.out.println("Element "+target+" found at "+mid);
+                return;
+            }
+            if(arr[mid]>=arr[low]){
+                if(target>=arr[low] && target<arr[mid]){
+                    high = mid-1;
+                }else {
+                    low = mid+1;
+                }
+            }else{
+                if(target>arr[mid] && target<=arr[high]){
+                    low = mid+1;
+                }else {
+                    high = mid-1;
+                }
+            }
+        }
+        System.out.println(-1);
+
+    }
+}