Merge pull request #6823 from oWnOIzRi/week184

add solution week 184 task 2 in python

1 files changed, 186 insertions, 0 deletions

diff --git a/challenge-184/steven-wilson/python/ch-02.ipynb b/challenge-184/steven-wilson/python/ch-02.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "9127c568",
+   "metadata": {},
+   "source": [
+    "# Week 184 The Weekly Challenge\n",
+    "# Task 2: Split Array\n",
+    "\n",
+    "You are given list of strings containing 0-9 and a-z separated by space only.\n",
+    "\n",
+    "Write a script to split the data into two arrays, one for integers and one for alphabets only.\n",
+    "Example 1\n",
+    "```\n",
+    "Input: @list = ( 'a 1 2 b 0', '3 c 4 d')\n",
+    "Output: [[1,2,0], [3,4]] and [['a','b'], ['c','d']]\n",
+    "```\n",
+    "Example 2\n",
+    "```\n",
+    "Input: @list = ( '1 2', 'p q r', 's 3', '4 5 t')\n",
+    "Output: [[1,2], [3], [4,5]] and [['p','q','r'], ['s'], ['t']]\n",
+    "```"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "34ae5529",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "input1 = ('a 1 2 b 0', '3 c 4 d')\n",
+    "input2 = ('1 2', 'p q r', 's 3', '4 5 t')"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "95af3e0d",
+   "metadata": {},
+   "source": [
+    "Start by working out how to take one string and split the data into two arrays."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "315587cc",
+   "metadata": {},
+   "source": [
+    "Split the string on whitespace:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "35dfad2b",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "['a', '1', '2', 'b', '0']"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "input1[0].split(\" \")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7e670f24",
+   "metadata": {},
+   "source": [
+    "Digits need to be cast to int type.\n",
+    "Function returns a tuple containing 2 arrays, first of integers then of letters. Empty arrays may be returned."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "b5021170",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "([1, 2, 0], ['a', 'b'])"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "def separate_alpha_num ( alpha_num_string ):\n",
+    "    integers, letters = [], []\n",
+    "    for x in alpha_num_string.split(\" \"):\n",
+    "        letters.append(x) if x.isalpha() else integers.append(int(x)) \n",
+    "    return integers, letters\n",
+    "\n",
+    "separate_alpha_num(input1[0])"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "9ad2ac4e",
+   "metadata": {},
+   "source": [
+    "Next create a function to handle the list of strings.  It will return 2 arrays of arrays, first of integers then letters."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "aac5d69f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[[1, 2, 0], [3, 4]]  and  [['a', 'b'], ['c', 'd']]\n"
+     ]
+    }
+   ],
+   "source": [
+    "def separate_alpha_num_from_strings(los):\n",
+    "    lo_integers, lo_letters = [], []\n",
+    "    for s in los:\n",
+    "        integers, letters = separate_alpha_num(s)\n",
+    "        if integers: lo_integers.append(integers)  # Only add arrays if not empty\n",
+    "        if letters: lo_letters.append(letters)\n",
+    "    return lo_integers, lo_letters\n",
+    "\n",
+    "integers, letters = separate_alpha_num_from_strings(input1)\n",
+    "print(integers, \" and \", letters)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "97771b02",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[[1, 2], [3], [4, 5]]  and  [['p', 'q', 'r'], ['s'], ['t']]\n"
+     ]
+    }
+   ],
+   "source": [
+    "integers, letters = separate_alpha_num_from_strings(input2)\n",
+    "print(integers, \" and \", letters)"
+   ]
+  }
+ ],
+ "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": "3.8.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}