Added new riddle

Riddles/Riddle Interview Problems/Riddle Interview Problems - SOLUTIONS/.ipynb_checkpoints/Prisoners and hats - SOLUTION-checkpoint.ipynb

@@ -0,0 +1,6 @@
+{
+ "cells": [],
+ "metadata": {},
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

Riddles/Riddle Interview Problems/Riddle Interview Problems - SOLUTIONS/Coins and a Scale - SOLUTION.ipynb

@@ -17,23 +17,23 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.11"
+   "pygments_lexer": "ipython3",
+   "version": "3.8.8"
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+ "nbformat_minor": 1
 }

Riddles/Riddle Interview Problems/Riddle Interview Problems - SOLUTIONS/Prisoners and hats - SOLUTION.ipynb

@@ -0,0 +1,50 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "f40082e5",
+   "metadata": {},
+   "source": [
+    "# Prisoners and hats - SOLUTION"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "de7dfbd9",
+   "metadata": {},
+   "source": [
+    "## Problem Statement\n",
+    "There are 100 prisoners all sentenced to death. One night before the execution, the warden gives them a chance to live if they all work on a strategy together. The execution scenario is as follows –\n",
+    "\n",
+    "On the day of execution, all the prisoners will be made to stand in a straight line such that one prisoner stands just behind another and so on. All prisoners will be wearing a hat either of Blue colour or Red. The prisoners don’t know what colour of hat they are wearing. The prisoner who is standing at the last can see all the prisoners in front of him (and what colour of hat they are wearing). A prisoner can see all the hats in front of him. The prisoner who is standing in the front of the line cannot see anything.\n",
+    "\n",
+    "The executioner will ask each prisoner what colour of hat they are wearing one by one, starting from the last in the line. The prisoner can only speak “Red” or “Blue”. He cannot say anything else. If he gets it right, he lives otherwise he is shot instantly. All the prisoners standing in front of him can hear the answers and gunshots.\n",
+    "\n",
+    "Assuming that the prisoners are intelligent and would stick to the plan, what strategy would the prisoners make over the night to minimize the number of deaths?\n",
+    "\n",
+    "## Solution\n"
+   ]
+  }
+ ],
+ "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": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

Riddles/Riddle Interview Problems/Riddle Interview Problems /.ipynb_checkpoints/Prisoners and hats-checkpoint.ipynb

@@ -0,0 +1,6 @@
+{
+ "cells": [],
+ "metadata": {},
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

Riddles/Riddle Interview Problems/Riddle Interview Problems /Bridge Crossing.ipynb

@@ -24,23 +24,23 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
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+   "pygments_lexer": "ipython3",
+   "version": "3.8.8"
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- "nbformat_minor": 0
+ "nbformat_minor": 1
 }

Riddles/Riddle Interview Problems/Riddle Interview Problems /Prisoners and hats.ipynb

@@ -0,0 +1,54 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "dce1a8f7",
+   "metadata": {},
+   "source": [
+    "# Prisoners and hats"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "aade5a41",
+   "metadata": {},
+   "source": [
+    "## Problem statement\n",
+    "There are 100 prisoners all sentenced to death. One night before the execution, the warden gives them a chance to live if they all work on a strategy together. The execution scenario is as follows –\n",
+    "\n",
+    "On the day of execution, all the prisoners will be made to stand in a straight line such that one prisoner stands just behind another and so on. All prisoners will be wearing a hat either of Blue colour or Red. The prisoners don’t know what colour of hat they are wearing. The prisoner who is standing at the last can see all the prisoners in front of him (and what colour of hat they are wearing). A prisoner can see all the hats in front of him. The prisoner who is standing in the front of the line cannot see anything.\n",
+    "\n",
+    "The executioner will ask each prisoner what colour of hat they are wearing one by one, starting from the last in the line. The prisoner can only speak “Red” or “Blue”. He cannot say anything else. If he gets it right, he lives otherwise he is shot instantly. All the prisoners standing in front of him can hear the answers and gunshots.\n",
+    "\n",
+    "Assuming that the prisoners are intelligent and would stick to the plan, what strategy would the prisoners make over the night to minimize the number of deaths?\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "ed90d944",
+   "metadata": {},
+   "source": []
+  }
+ ],
+ "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": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}