Final

main.ipynb

@@ -0,0 +1,52 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def recsum(n):\n",
+    "    if n:\n",
+    "        n+=n\n",
+    "    recsum(n-1)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "recsum(10)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3.10.5 64-bit",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.5"
+  },
+  "orig_nbformat": 4,
+  "vscode": {
+   "interpreter": {
+    "hash": "369f2c481f4da34e4445cda3fffd2e751bd1c4d706f27375911949ba6bb62e1c"
+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}

main.py

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+def recsum(n):
+    if not n:
+        return 0
+    else:
+        return recsum(n-1)+n
+
+print(recsum(10))
+
+def boardlength(n):
+    if n<=3:
+        return 0
+    else:
+        return boardlength(n-4)+1
+    
+print(boardlength(16))
+
+def reversing(list_n):
+    if len(list_n) == 1:
+        return list_n
+    else:
+        first_half = list_n[:len(list_n)//2]
+        second_half = list_n[len(list_n)//2:]
+        return reversing(second_half) + reversing(first_half)
+
+print(reversing([1,2,3,4]))
+
+def binarySearch(list1,element):
+    print(list1,element,len(list1))
+    if list1[len(list1)//2]==element:
+        return len(list1)//2
+
+    elif list1[len(list1)//2] < element:
+        return binarySearch(list1[len(list1)//2:],element)
+    elif list1[len(list1)//2] > element:
+        return binarySearch(list1[:len(list1)//2],element)
+
+    elif len(list1) == 1 and list1[len(list1)//2] != element:
+        return None
+
+print(binarySearch([1,2,3,4,5],5))