Added solution

Author: avidLearnerInProgress

transition_point.cpp

@@ -0,0 +1,21 @@
+/*This is a function problem.You only need to complete the function given below*/
+
+int helper(int arr[], int strt, int end){
+    while(strt <= end){
+        int mid = strt + (end - strt)/2;
+        if(arr[mid] == 1 && arr[mid - 1] == 0)
+            return mid;
+        else if(arr[mid] == 1)
+            end = mid - 1;
+        else 
+            strt = mid + 1;
+    }
+    return -1;
+}
+
+int transitionPoint(int arr[],int n)
+{
+// Your code goes here
+    int strt = 0, end = n -1;
+    return helper(arr, strt, end);
+}