diff --git a/BeginnersFriendlyRepositories.md b/BeginnersFriendlyRepositories.md
index 60ce126..51cfc6e 100644
--- a/BeginnersFriendlyRepositories.md
+++ b/BeginnersFriendlyRepositories.md
@@ -28,6 +28,10 @@ If you know any good repository for beginners, feel free to add it to this table
 | OpenSauce | [Link](https://github.com/TechnoBlogger14o3/OpenSauce) | Multiple Languages, DSA, Algorithms |
 | Awesome Lists | [Link](https://github.com/sindresorhus/awesome) | Markdown, Documentation |
 | 30 Seconds of Code | [Link](https://github.com/30-seconds/30-seconds-of-code) | JavaScript, TypeScript, Python |
+| Exercism | [Link](https://github.com/exercism/exercism) | Ruby, JavaScript, Multiple Languages |
+| TheAlgorithms | [Link](https://github.com/TheAlgorithms) | Multiple Languages, Algorithms |
+| TensorFlow Examples | [Link](https://github.com/tensorflow/examples) | Python, Machine Learning |
+| Open Source Game Development | [Link](https://github.com/godotengine/godot) | C++, GDScript |
 
 
 
diff --git a/first_last_digit.py/first last b/first_last_digit.py/first last
new file mode 100644
index 0000000..ad4131a
--- /dev/null
+++ b/first_last_digit.py/first last	
@@ -0,0 +1,11 @@
+def swap_first_last(num):
+    last = num % 10
+    n = num
+    pow10 = 1
+    while n >= 10:
+        n //= 10
+        pow10 *= 10
+    first = n
+    middle = (num % pow10) // 10
+    result = last * pow10 + middle * 10 + first
+    return result