Standalone runnable .py files — one concern each, no shared imports.
Most need only the standard library; a few call out external packages
in their header. Run them from the repo root.
| Script | What it does | Run it |
|---|---|---|
01.TwoSum.py |
LeetCode-style Two Sum using a sort + two-pointer pass over (value, index) pairs; returns the original indices of the two numbers that add up to the target. Class only — no CLI; import Solution to reuse. |
python -c "import importlib.util as u; m=u.spec_from_file_location('s','scripts/01.TwoSum.py'); mod=u.module_from_spec(m); m.loader.exec_module(mod); print(mod.Solution().twoSum([2,7,11,15], 9))" or paste into a scratch file |
argparse_1.py |
CLI arithmetic demo built on argparse: takes two ints and an add/subtract/multiply choice, prints the result. Shows --help and type-checked choices. |
python scripts/argparse_1.py 7 3 multiply |
BinarySearch.py |
Iterative binary search on a sorted list; searches for 4 in [3,4,5,6,7,8,9] and prints the index. |
python scripts/BinarySearch.py |
check.py |
Scratch-pad demo used to learn terminal I/O in VS Code: prints "Hello world", reads one number via input(), and prints a movie list. |
python scripts/check.py |
csv_json_converter.py |
Converts between a CSV file and a JSON file of flat objects; auto-detects direction from the .csv / .json extension of the two path arguments. Validates the JSON is a list of dicts and wraps a lone dict into a list so csv.DictWriter accepts it. |
python scripts/csv_json_converter.py in.csv out.json |
enum_use_case.py |
One-line enum.Enum demo: defines OrderStatus with PENDING / SHIPPED / DELIVERED and prints the current status value. |
python scripts/enum_use_case.py |
guess_the_number.py |
Two-mode number-guessing game — (1) you guess the computer's secret in 1..100, (2) the computer binary-searches your number in 1..1000. Includes a max_guesses helper derived from ceil(log2(n+1)) and input-validation loops. |
python scripts/guess_the_number.py (interactive) |
LinearSearch.py |
Simple linear scan for a target in an unsorted list; searches for 1 in [2,4,0,1,9] and prints the index. |
python scripts/LinearSearch.py |
MergeSort.py |
In-place recursive merge sort with a comment walk-through; sorts [6,5,12,10,9,1] and prints the result. |
python scripts/MergeSort.py |
multithreading.py |
Runs "square each" and "cube each" worker threads in parallel over the same list. Uses time.sleep(1) per item to simulate work and prints total wall-clock time to show the speedup. |
python scripts/multithreading.py |
pdf2doc.py |
PDF → DOCX converter using the pdf2docx library. Converts a hard-coded ListsOfInbuiltMethods.pdf in the current working directory to ListsOfInbuiltMethods.docx. |
pip install pdf2docx then python scripts/pdf2doc.py (from a CWD containing the PDF) |
qr_code_generator.py |
CLI that turns a text string or URL into a QR code PNG; refuses to overwrite an existing output file. | pip install "qrcode[pil]" then python scripts/qr_code_generator.py "https://example.com" -o qr.png |
toh.py |
Towers of Hanoi: prompts for a disk count and prints each move X to Y step via the classic three-peg recursion. |
python scripts/toh.py (interactive) |