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Completed Assignment 1 - Anagram Checker #1

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{
"cells": [
{
"cell_type": "code",
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"id": "a3787ba3-34d8-42bd-baf5-9311c7e273ee",
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"source": [
"# Assignment 1 — Anagram Checker\n",
"\n",
"**Student:** <Yuou Sheng> \n",
"**Date:** October 20, 2025\n",
"\n",
"This notebook implements:\n",
"- Part 1: Base `anagram_checker(word_a, word_b)` (case-insensitive by default)\n",
"- Part 2: Extended `anagram_checker(word_a, word_b, is_case_sensitive)`"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "0d69ee98-543b-4e6c-827e-3252a59388ca",
"metadata": {},
"outputs": [],
"source": [
"## Part 1 — Base Anagram Checker\n",
"\n",
"**Goal:** Return `True` if two words are anagrams, else `False`. \n",
"**Assumption:** Uppercase letters are the same as lowercase (case-insensitive).\n",
"**Approach:** \n",
"1. Normalize case (lowercase both strings). \n",
"2. Sort letters of each string. \n",
"3. Compare the sorted results — if equal, they’re anagrams."
]
},
{
"cell_type": "code",
"execution_count": 1,
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"def anagram_checker(word_a, word_b):\n",
" \"\"\"\n",
" Return True if word_a and word_b are anagrams (case-insensitive), else False.\n",
" Strategy: lowercase both, sort characters, compare.\n",
" \"\"\"\n",
" # 1) Normalize case\n",
" a = word_a.lower()\n",
" b = word_b.lower()\n",
"\n",
" # 2) Sort letters\n",
" sorted_a = sorted(a)\n",
" sorted_b = sorted(b)\n",
"\n",
" # 3) Compare\n",
" return sorted_a == sorted_b"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "e3ec9314-cb81-4b3c-be3b-170d417def20",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"True\n",
"False\n",
"True\n"
]
}
],
"source": [
"print(anagram_checker(\"Silent\", \"listen\")) # Expected: True\n",
"print(anagram_checker(\"Silent\", \"Night\")) # Expected: False\n",
"print(anagram_checker(\"night\", \"Thing\")) # Expected: True"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "b929e95f-d57c-4961-9f25-fa24c20eb3af",
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"source": [
"## Part 2 — Add Case-Sensitivity Option\n",
"\n",
"Now we add a third argument `is_case_sensitive` that controls whether uppercase and lowercase letters are treated as the same.\n",
"\n",
"**Logic:**\n",
"- If `is_case_sensitive` is `False` → lowercase both words (same as before). \n",
"- If `True` → do **not** lowercase (so “A” ≠ “a”)."
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "c21419d7-0b8c-4a84-9e81-b436a09b03d7",
"metadata": {},
"outputs": [],
"source": [
"# Part 2: Add Case-Sensitivity Option\n",
"\n",
"def anagram_checker(word_a, word_b, is_case_sensitive):\n",
" \"\"\"\n",
" Return True if word_a and word_b are anagrams, considering case sensitivity.\n",
" \"\"\"\n",
" # Step 1: Handle case sensitivity\n",
" if not is_case_sensitive:\n",
" word_a = word_a.lower()\n",
" word_b = word_b.lower()\n",
" \n",
" # Step 2: Sort and compare\n",
" sorted_a = sorted(word_a)\n",
" sorted_b = sorted(word_b)\n",
" \n",
" return sorted_a == sorted_b"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "24b6860b-5df9-45bb-86ab-30e4acd4c455",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"True\n",
"False\n",
"True\n",
"False\n"
]
}
],
"source": [
"print(anagram_checker(\"Silent\", \"listen\", False)) # Expected: True\n",
"print(anagram_checker(\"Silent\", \"Listen\", True)) # Expected: False\n",
"print(anagram_checker(\"AbC\", \"cBa\", False)) # Expected: True\n",
"print(anagram_checker(\"AbC\", \"cBa\", True)) # Expected: False"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "cd9c3124-6a1f-45c9-bbe2-17b3b4941b87",
"metadata": {},
"outputs": [],
"source": [
"### Notes on Code Quality\n",
"- Clear variable names (`word_a`, `word_b`, `is_case_sensitive`)\n",
"- Clean and readable structure\n",
"- Inline comments explaining each step\n",
"- Code cells execute without errors"
]
}
],
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