Logic Problems | Ai With Raj

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Beginner (1-30)

Focus on Basic Logic, Loops, and Conditions

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Even or Odd Checker

Write a program to determine if a given number is even or odd

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Maximum of Three

Compare three numbers and find the largest one

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Minimum of Three

Compare three numbers and find the smallest one

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Number Sign Checker

Determine if a number is positive, negative, or zero

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Multiplication Table

Generate and display multiplication table for any number

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Even Number Generator

Print all even numbers from 1 to N

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Odd Number Generator

Print all odd numbers from 1 to N

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Factorial Calculator

Calculate factorial of a number (n! = n × (n-1) × ... × 1)

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Sum of Digits

Add all individual digits of a number together

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Number Reverser

Reverse the digits of a given number (123 becomes 321)

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Number Palindrome

Check if a number reads the same forwards and backwards

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String Palindrome

Check if a string reads the same forwards and backwards

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Vowel Counter

Count the number of vowels (a, e, i, o, u) in a string

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Word Counter

Count the total number of words in a sentence

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Fibonacci Generator

Generate Fibonacci sequence up to N terms (0, 1, 1, 2, 3, 5...)

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GCD Calculator

Find the Greatest Common Divisor of two numbers

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LCM Calculator

Find the Least Common Multiple of two numbers

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Leap Year Checker

Determine if a given year is a leap year or not

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List Maximum

Find the largest element in a list of numbers

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List Minimum

Find the smallest element in a list of numbers

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Second Largest

Find the second largest number in a list

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Even Index Elements

Print elements at even positions (0, 2, 4, ...) in a list

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Odd Index Elements

Print elements at odd positions (1, 3, 5, ...) in a list

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List Sum

Calculate the sum of all elements in a list

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Remove Duplicates

Remove duplicate elements from a list keeping unique values

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Element Frequency

Count how many times each element appears in a list

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Even/Odd Counter

Count how many even and odd numbers are in a list

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Square Calculator

Calculate the square of each element in a list

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Replace Negatives

Replace all negative numbers in a list with zero

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String Uppercase

Convert all string elements in a list to uppercase

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Intermediate (31-70)

Logic Patterns, Strings, Functions

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Common Elements

Find elements that exist in both lists

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List Difference

Find elements that are in one list but not the other

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Star Triangle

Print a triangle pattern using asterisks (*)

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Reverse Triangle

Print an inverted triangle pattern

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Number Pyramid

Create a pyramid pattern using numbers

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Prime Checker

Check if a number has exactly two divisors

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Prime List

Generate all prime numbers between 1 and 100

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ASCII Values

Display ASCII code for each character in a string

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Special Char Remover

Remove all non-alphabetic characters from text

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Case Counter

Count uppercase and lowercase letters separately

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Title Case

Capitalize first letter of each word in a sentence

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Space Replacer

Replace all spaces with underscores in text

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Substring Generator

Find all possible substrings of a given string

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Substring Counter

Count occurrences of a substring in main string

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Anagram Checker

Check if two strings contain same letters rearranged

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Duplicate Counter

Count characters that appear more than once

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First Non-Repeating

Find first character that appears only once

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First Repeating

Find first character that appears more than once

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Decimal to Binary

Convert decimal number to binary representation

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Binary to Decimal

Convert binary number to decimal representation

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Temperature Converter

Convert temperature from Celsius to Fahrenheit

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Random Generator

Generate a list of N random numbers

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Formula Sum

Sum 1 to N using mathematical formula (N*(N+1)/2)

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Power Calculator

Calculate power without using ** operator

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Calculator Functions

Create add, subtract, multiply, divide functions

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Compound Interest

Calculate compound interest for investments

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List Rotator

Shift all elements in list one position to the right

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Sort Checker

Check if a list is already sorted in ascending order

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List Merger

Merge two sorted lists into one sorted list

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Missing Number

Find which number is missing from 1 to N sequence

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Duplicate Finder

Find all numbers that appear more than once

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Sum Pairs

Count pairs of numbers that add up to target sum

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Binary Search

Implement efficient search algorithm for sorted lists

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Zero Remover

Remove all zero values from a list

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List Flattener

Convert nested list into single flat list

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Max Character

Find character that appears most frequently

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Vowel Remover

Remove all vowels from a string

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Checkerboard Pattern

Create alternating pattern like a checkerboard

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Variable Swapper

Swap two variables without using a third variable

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Digit Extractor

Extract and print only numeric digits from a string

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Advanced (71-100)

Recursion, Algorithms, Mini-Projects

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Recursive Factorial

Calculate factorial using recursive function calls

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Recursive Fibonacci

Generate Fibonacci numbers using recursion

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Tower of Hanoi

Solve classic Tower of Hanoi puzzle for 3 disks

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Pascal's Triangle

Generate Pascal's Triangle with binomial coefficients

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String Permutations

Find all possible arrangements of string characters

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Bubble Sort

Sort array by repeatedly swapping adjacent elements

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Insertion Sort

Sort by inserting each element in correct position

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Selection Sort

Sort by selecting minimum element in each iteration

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Longest Word

Find the longest word in a given sentence

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Mini ATM System

Create ATM with deposit, withdraw, and balance features

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Dice Simulator

Simulate rolling a six-sided dice

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Coin Toss

Simulate flipping a coin (heads or tails)

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Password Generator

Generate random password of specified length

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Email Validator

Check if email address has valid format

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Password Validator

Check password strength (length, symbols, uppercase, numbers)

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Number Guessing Game

Create game where user guesses random number

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Hangman Game

Create classic word guessing game

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Number to Words

Convert digits to word form (123 → "one two three")

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Character Counter

Count digits, letters, and symbols separately

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Armstrong Number

Check if number equals sum of cubes of its digits

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Armstrong Range

Find all Armstrong numbers in given range

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Random OTP

Generate random One-Time Password

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Caesar Cipher

Implement classic encryption by shifting letters

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Set Bits Counter

Count number of 1s in binary representation

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Trailing Zeroes

Count trailing zeros in factorial of number

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Zero Sum Triplets

Find all unique triplets that sum to zero

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Longest Increasing

Find longest increasing subsequence in list

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Spiral Matrix

Print matrix elements in spiral order

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Matrix Transpose

Convert rows to columns and vice versa

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Reverse Words

Reverse word order but keep character order intact

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