Juggling-Algorithm Description and Code added

algorithms/CPlusPlus/Arrays/Juggling-Algorithm.cpp

@@ -1,3 +1,17 @@
+/* In this method, divide the array into M sets, where M = GCD (n, k), and then rotate the elements in each set.
+From the number of elements ( n ) of the array and number of rotations ( k ) to be made to the array, the GCD(n, k) number of blocks are made.
+Then in each block, shifting will take place to the corresponding elements in the block.
+ After all the elements in all the blocks are shifted, the array will be rotated for the given number of times.
+Example: If we want to rotate the array Arr : {10, 20, 30, 40, 50, 60} by 2 positions :
+ M = GCD(60, 20) = 20
+Initial Array : 10  20  30  40  50  60  
+First Set Moves : 50  20  10  40  30  60
+Second Set Moves : 50   60  10  20  30  40 
+Time complexity : O(N) 
+Auxiliary Space : O(1)
+ */
+
+
 #include <bits/stdc++.h>
 using namespace std;
  int gcd(int a, int b) {