I added a file with some exercises

that i did using recursion

.gitignore

@@ -127,3 +127,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# files
+recursivo.py

Recursividade.py

@@ -0,0 +1,76 @@
+#this one does the a ** b operation 
+def elevado(a,n):
+    if n == 1:
+        return a
+    return a * elevado(a,n-1)
+
+#this one does thhe basic multiplication operation
+def produto(a,b):
+    if b == 1:
+        return a
+    return a + produto(a,b-1)
+
+#this one gives you the number in binary
+def binario(a):
+    if a > 1:
+        binario(a//2)
+    print(a % 2,end = '')
+
+#This one tells you how many digits there are
+def digitos(a):
+    if a < 10:
+        return 1
+    else:
+        return 1 + digitos(a / 10)
+
+# This one adds the values of the digits
+def soma_digitos(a):
+    if a < 10:
+        return a
+    else:
+        return (a % 10) + int(soma_digitos(a/10))
+
+#This one gives tou max from list
+def Max(s):
+    if len(s) == 1:
+        return s[0]
+    else:
+        return s[0] if s[0] > Max(s[1:]) else Max(s[1:])
+
+#This one gives you min from list
+def Min(s):
+    if len(s) == 1:
+        return s[0]
+    else:
+        return s[0] if s[0] < Min(s[1:]) else Min(s[1:])
+
+#This one gives you the sum of the list
+def soma_list(s):
+    if len(s)== 1:
+        return s[0]
+    else:
+        return s[0] + soma_list(s[1:])
+
+#This one gives you the sum of even numbers of the list
+def soma_pares_lista(s):
+    if not s:
+        return 0
+    else:
+        verif = 0 if s[0] % 2 != 0 else s[0]
+        return verif + soma_pares_lista(s[1:]) 
+
+#This one is a linear search using recursion
+def busca_linear(s,k):
+    if s[0] == k:
+        return s[0]
+    else:
+        t = len(s)
+        return busca_linear(s[1:], k)if t != 1 else 'não existe na lista'
+
+#This one gives you the multiplication of 2 numbers with the russian multiplication method
+def multi_russa(a,b,s = 0):
+    if a == 1:
+        return s + b if a % 2 !=0 else s
+    else:
+        return multi_russa(a // 2, b * 2, s + b) if a % 2 !=0 else multi_russa(a // 2, b * 2, s)
+