Merge pull request #854 from priyanka2710singh/master

Created a Mountain.java file

Author: SR-Sunny-Raj

05. Searching/Mountain.java

@@ -0,0 +1,37 @@
+import java.util.*;
+public class Mountain
+{
+    public  static int peakIndexInMountainArray(int n, int[] arr)
+    {
+        int start =0;
+        int end= arr.length-1;
+        while(start<end)
+        {
+            int mid = start +(end - start) / 2;
+            if(arr[mid]>arr[mid+1])
+            {
+                end=mid;
+            }
+            else{
+                start = mid+1;
+            }
+            
+        }
+        return start;
+    }
+    
+	public static void main(String[] args) {
+	    
+	    Scanner sc = new Scanner(System.in);
+	    int n =sc.nextInt();
+	    
+	    int[] arr = new int[n];
+	    for(int i=0;i<n;i++)
+	    {
+	        arr[i] =sc.nextInt();
+	    }
+	    int ans = peakIndexInMountainArray(n,arr);
+	    System.out.println(ans);
+	    
+	}
+}