Update READMEs.

trekhleb · trekhleb · commit 0a23b3faa514 · 2018-04-13T17:39:39.000+03:00
diff --git a/src/algorithms/string/permutations/README.md b/src/algorithms/string/permutations/README.md
@@ -14,6 +14,8 @@ When the order **does** matter it is a **Permutation**.
 
 ![Permutation Lock](https://www.mathsisfun.com/combinatorics/images/combination-lock.jpg)
 
+![Permutation With Repetitions](https://upload.wikimedia.org/wikipedia/commons/6/69/Permutations-With-Repetition.gif)
+
 ## References
 
 [Math Is Fun](https://www.mathsisfun.com/combinatorics/combinations-permutations.html)
