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Hayden Patel 22.05.2026 12:17

Randomizer

Hackathon project, built in one night

core.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

app.py

def count_words(text): return len(text.split())

print(count_words("hello world foo"))

utils.py

class Node:
    def __init__(self, val):
        self.val = val
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None
    def append(self, val):
        if not self.head:
            self.head = Node(val)
            return
        cur = self.head
        while cur.next: cur = cur.next
        cur.next = Node(val)
    def display(self):
        cur = self.head
        while cur:
            print(cur.val, end=' ')
            cur = cur.next
        print()

ll = LinkedList()
ll.append(1); ll.append(2); ll.append(3)
ll.display()

Hayden Petrov 22.05.2026 12:17

Mini tetris

Small script for learning

data.py

def max_in_list(lst):
    m = lst[0]
    for x in lst:
        if x > m: m = x
    return m

print(max_in_list([3, 7, 1, 9, 4]))

Parker Petrov 22.05.2026 12:16

Multiplication table

Work in progress

core.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

helper.py

def count_words(text): return len(text.split())

print(count_words("hello world foo"))

Drew Tanaka 22.05.2026 12:16

Pomodoro timer #83

algo.py

def caesar_cipher(text, shift=3):
    result = ""
    for ch in text:
        if ch.isalpha():
            base = ord("A") if ch.isupper() else ord("a")
            result += chr((ord(ch) - base + shift) % 26 + base)
        else: result += ch
    return result

print(caesar_cipher("Hello World"))

app.py

def debounce(fn, delay):
    import time
    last = [0.0]
    def wrapper(*args):
        now = time.time()
        if now - last[0] >= delay:
            last[0] = now
            return fn(*args)
    return wrapper

core.py

def max_in_list(lst):
    m = lst[0]
    for x in lst:
        if x > m: m = x
    return m

print(max_in_list([3, 7, 1, 9, 4]))

Morgan Smith 22.05.2026 12:16

JSON export

From algorithms course

views.py

from collections import Counter
def top_words(text, n=5):
    words = text.lower().split()
    return Counter(words).most_common(n)

print(top_words('the cat sat on the mat the cat'))

helper.py

def is_prime(n):
    if n < 2: return False
    for i in range(2, int(n**0.5)+1):
        if n % i == 0: return False
    return True

print(is_prime(17))

Taylor Johansson 22.05.2026 12:16

Binary search

Extracted from a larger project

views.py

class Node:
    def __init__(self, val):
        self.val = val
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None
    def append(self, val):
        if not self.head:
            self.head = Node(val)
            return
        cur = self.head
        while cur.next: cur = cur.next
        cur.next = Node(val)
    def display(self):
        cur = self.head
        while cur:
            print(cur.val, end=' ')
            cur = cur.next
        print()

ll = LinkedList()
ll.append(1); ll.append(2); ll.append(3)
ll.display()

Finley Santos 22.05.2026 12:16

Simple chatbot

Work in progress

app.py

import random
def gen_password(length=12):
    chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%"
    return "".join(random.choice(chars) for _ in range(length))

print(gen_password())

Drew Larsson 22.05.2026 12:15

Binary search #27

Rewrote old code

algo.py

def fib(n):
    if n <= 1: return n
    return fib(n-1) + fib(n-2)

print(fib(10))

Skyler Petrov 22.05.2026 12:15

Guess the number #94

Extracted from a larger project

solver.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

helper.py

def max_in_list(lst):
    m = lst[0]
    for x in lst:
        if x > m: m = x
    return m

print(max_in_list([3, 7, 1, 9, 4]))

solver.py

def factorial(n):
    if n == 0: return 1
    return n * factorial(n-1)

print(factorial(5))

Drew Larsson 22.05.2026 12:15

Mandelbrot fractal #58

Small script for learning

algo.py

def fib(n):
    if n <= 1: return n
    return fib(n-1) + fib(n-2)

print(fib(10))

utils.py

def factorial(n):
    if n == 0: return 1
    return n * factorial(n-1)

print(factorial(5))

Zion Smith 22.05.2026 12:15

Quick select #72

Rewrote old code

core.py

def debounce(fn, delay):
    import time
    last = [0.0]
    def wrapper(*args):
        now = time.time()
        if now - last[0] >= delay:
            last[0] = now
            return fn(*args)
    return wrapper

main.py

def flatten(lst):
    result = []
    for item in lst:
        if isinstance(item, list): result.extend(flatten(item))
        else: result.append(item)
    return result

print(flatten([1, [2, [3, 4]], 5]))

Nico Rossi 22.05.2026 12:14

Multiplication table

Requires Python 3.11+

data.py

def factorial(n):
    if n == 0: return 1
    return n * factorial(n-1)

print(factorial(5))

app.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

Rowan Novak 22.05.2026 12:13

Graph traversal #71

Clean and minimal

utils.py

def factorial(n):
    if n == 0: return 1
    return n * factorial(n-1)

print(factorial(5))

algo.py

import random
def gen_password(length=12):
    chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%"
    return "".join(random.choice(chars) for _ in range(length))

print(gen_password())

Finley Larsson 22.05.2026 12:13

Expression calculator

Pure Python, no deps

views.py

def count_words(text): return len(text.split())

print(count_words("hello world foo"))

Skyler O'Brien 22.05.2026 12:12

Backup utility #27

Hackathon project, built in one night

models.py

def reverse_string(s): return s[::-1]

print(reverse_string("hello"))

handler.py

def max_in_list(lst):
    m = lst[0]
    for x in lst:
        if x > m: m = x
    return m

print(max_in_list([3, 7, 1, 9, 4]))

Nico Rossi 22.05.2026 12:12

Battleship

Hackathon project, built in one night

app.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

views.py

def debounce(fn, delay):
    import time
    last = [0.0]
    def wrapper(*args):
        now = time.time()
        if now - last[0] >= delay:
            last[0] = now
            return fn(*args)
    return wrapper

Sage Garcia 22.05.2026 12:12

Graph traversal #26

Extracted from a larger project

core.py

def reverse_string(s): return s[::-1]

print(reverse_string("hello"))

Harper Novak 22.05.2026 12:12

A* pathfinding

Hackathon project, built in one night

test.py

def debounce(fn, delay):
    import time
    last = [0.0]
    def wrapper(*args):
        now = time.time()
        if now - last[0] >= delay:
            last[0] = now
            return fn(*args)
    return wrapper

config.py

def memoize(fn):
    cache = {}
    def wrapper(*args):
        if args not in cache:
            cache[args] = fn(*args)
        return cache[args]
    return wrapper

@memoize
def expensive(n):
    return sum(range(n))

print(expensive(1000000))

Alex O'Brien 22.05.2026 12:11

Fibonacci recursive #38

Small script for learning

algo.py

def bubble_sort(arr):
    n = len(arr)
    for i in range(n):
        for j in range(0, n-i-1):
            if arr[j] > arr[j+1]: arr[j], arr[j+1] = arr[j+1], arr[j]
    return arr

print(bubble_sort([5, 3, 8, 1, 2]))

utils.py

class Node:
    def __init__(self, val):
        self.val = val
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None
    def append(self, val):
        if not self.head:
            self.head = Node(val)
            return
        cur = self.head
        while cur.next: cur = cur.next
        cur.next = Node(val)
    def display(self):
        cur = self.head
        while cur:
            print(cur.val, end=' ')
            cur = cur.next
        print()

ll = LinkedList()
ll.append(1); ll.append(2); ll.append(3)
ll.display()

Avery Mueller 22.05.2026 12:10

Password generator #73

Small script for learning

utils.py

def binary_search(arr, target):
    lo, hi = 0, len(arr) - 1
    while lo <= hi:
        mid = (lo + hi) // 2
        if arr[mid] == target: return mid
        elif arr[mid] < target: lo = mid + 1
        else: hi = mid - 1
    return -1

print(binary_search([1,3,5,7,9], 7))

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