Remove All Duplicate Letters from a String in Python

input_str = "programming"
result = ""

for char in input_str:
if char not in result:
result += char

print("String after removing duplicates:", result)

Output:

String after removing duplicates: progamin


Explaination:- https://youtube.com/shorts/zZ1sXTIg2mg

Find the first Non repeating character in a string

txt = "teeter"

for c in txt:
if txt.count(c) == 1:
print("First non-repeating:", c)
break

Output:

First non-repeating: r

Explanation:- https://youtube.com/shorts/H0VABWdyswY

Check if a String Contains Only Digits or not in Python


txt = "123456"

print(txt.isdigit())


Output:

True


Explaination: https://youtube.com/shorts/eSllOxJHEv0

Find the Longest Word in a Sentence

txt = "Python is a powerful language"

words = txt.split()
longest = max(words, key=len)

print("Longest word:", longest)




Output:

Longest word: powerful


Explaiantion:- https://www.youtube.com/shorts/GKFNSAueTS8

Capitalize the FirstLetter of Each Word in a String in Python

txt = "python is fun"

result = txt.title()

print(result)

Output:

Python Is Fun


Explaination:- https://www.youtube.com/shorts/aLtlsC-x9gk

Check if a String is a Valid Palindrome After Removing Non-Alphanumeric Characters in Python

import re

txt = "A man, a plan, a canal: Panama"

clean = re.sub(r'[^a-zA-Z0-9]', '', txt).lower()

print(clean == clean[::-1])

Output:
True


Explaination:- https://www.youtube.com/shorts/rlO57Nw9tP4

Compress a String in Python


txt = "aaabb"
result = ""
count = 1

for i in range(len(txt)):
if i+1 < len(txt) and txt[i] == txt[i+1]:
count += 1
else:
result += txt[i] + str(count)
count = 1

print(result)


Output: a3b2

Explaination:- https://youtube.com/shorts/HcbYoxCOCRw

Count the Number of Digits in an Integer in Python


num = 12345
print(len(str(num)))


Output: 5

Explaination:- https://youtube.com/shorts/5LN_JZNlYqo

Find Maximum Digit in a Number Using Built in Function


num = 59284
print(int(max(str(num))))

Output: 9

Explaination:- https://youtube.com/shorts/cz4UDAzmhFw

Find Maximum Digit in a Number Without Built in Function


num = 59284
max_digit = 0

while num > 0:
digit = num % 10
if digit > max_digit:
max_digit = digit
num = num // 10

print(max_digit)

Output: 9

Explaination:- https://youtube.com/shorts/xjZfaV7Xdjk

Find the Factors of a Number in Python

num = 12
for i in range(1, num+1):
if num % i == 0:
print(i)

Output:
1
2
3
4
6
12

Explaination:- https://youtube.com/shorts/qvt2EB5_4b4

Find GCD of Two Numbers in Python

import math

a = int(input("Enter first number: "))
b = int(input("Enter second number: "))

result = math.gcd(a, b)
print("GCD of", a, "and", b, "is:", result)


Output
Input → 12, 18
GCD of 12 and 18 is: 6



Explaination:- https://youtube.com/shorts/QGd32oNoz6k

Find LCM of Two Numbers in Python

import math

a = int(input("Enter first number: "))
b = int(input("Enter second number: "))

gcd = math.gcd(a, b)
lcm = (a * b) // gcd

print("LCM of", a, "and", b, "is:", lcm)


Output
Input → 12, 18
LCM of 12 and 18 is: 36


Explaination:- https://youtube.com/shorts/N17ktpEOMoI

Check Whether a Number is Palindrome or Not

num = 121
temp = num
rev = 0

while num > 0:
digit = num % 10
rev = rev * 10 + digit
num = num // 10

if temp == rev:
print("Palindrome")
else:
print("Not Palindrome")


Output
Input → 121 → Palindrome
Input → 123 → Not Palindrome


Explaination:- https://youtube.com/shorts/Aql1suBSlys

Find Square & Cube of Number | Python

num = 5

square = num ** 2
cube = num ** 3

print("Square:", square)
print("Cube:", cube)

Output
Input → 5
Square: 25
Cube: 125


Explaination:- https://youtube.com/shorts/bXydwbsH5eY

Calculate the Average of N Numbers

n = int(input("How many numbers? "))

numbers = []
for i in range(n):
num = float(input("Enter number: "))
numbers.append(num)

total = sum(numbers)
average = total / n

print("Average =", average)

Output
Input → 5 numbers: 10, 20, 30, 40, 50
Average = 30.0

Explaination:- https://youtube.com/shorts/g3ddbmTOyBk

Convert a Decimal Number to Binary

num = int(input("Enter a number: "))

binary = bin(num)
print("Binary with prefix:", binary)
print("Binary without prefix:", binary[2:])

Output
Input → 10
Binary with prefix: 0b1010
Binary without prefix: 1010

Explaination:- https://youtube.com/shorts/ExCnEOeiRoM

Day 1 - Find Sum of N Odd Numbers

def sum_odd_numbers(n):
return n * n

print(sum_odd_numbers(5)) # 25


Output
Input → 5
Output → 25

Explaination:- https://youtube.com/shorts/jTcG6qdsezg

Day 2 - Find Sum of N Even Numbers

def sum_even_numbers(n):
return n * (n + 1)

print(sum_even_numbers(5)) # 30


Output
Input → 5
Output → 30


Explaination:- https://youtube.com/shorts/GzKIyDgCZFk

Day 3 - Convert Binary to Decimal in Just 1 Minute!

def binary_to_decimal(binary_str):
decimal = 0
power = len(binary_str) - 1
for digit in binary_str:
decimal += int(digit) * (2 ** power)
power -= 1
return decimal

print(binary_to_decimal("1010")) # 10
print(binary_to_decimal("1111")) # 15


Output
Input → "1010" → Output → 10
Input → "1111" → Output → 15


Explaination:- https://youtube.com/shorts/b6t5G9AV71w

Day 4 - Convert Octal to Decimal in Just 1 Minute!

def octal_to_decimal(octal_str):
decimal = 0
power = len(octal_str) - 1
for digit in octal_str:
decimal += int(digit) * (8 ** power)
power -= 1
return decimal

print(octal_to_decimal("12")) # 10
print(octal_to_decimal("77")) # 63


Output
Input → "12" → Output → 10
Input → "77" → Output → 63


Explaination:- https://youtube.com/shorts/2uqOZSl40Ms