Binary Search

Author: soumyadip007

Searching/BinarySearch.ipynb

@@ -0,0 +1,65 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Element is present at index  3\n"
+     ]
+    }
+   ],
+   "source": [
+    "def binarySearch(arr, l, r, x): \n",
+    "  \n",
+    "    while l <= r: \n",
+    "  \n",
+    "        mid = l + (r - l) // 2; \n",
+    "          \n",
+    "        if arr[mid] == x: \n",
+    "            return mid \n",
+    "        elif arr[mid] < x: \n",
+    "            l = mid + 1\n",
+    "        else: \n",
+    "            r = mid - 1\n",
+    "      \n",
+    "    return -1\n",
+    "  \n",
+    "arr = [ 2, 3, 4, 10, 40 ] \n",
+    "x = 10\n",
+    "  \n",
+    "result = binarySearch(arr, 0, len(arr)-1, x) \n",
+    "  \n",
+    "if result != -1: \n",
+    "    print (\"Element is present at index % d\" % result) \n",
+    "else: \n",
+    "    print (\"Element is not present in array\") "
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "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": "3.7.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}