cracking-the-coding-interview
How to Merge Strings Alternately?
Wed Jul 10 2024
5 min read
Learn how to merge strings alternately in Python. Explore efficient algorithms and examples to combine two strings by alternating their characters, handling different string lengths.
Find Intersection of Two Arrays
Sun Jul 14 2024
5 min read
Learn how to find the intersection of two arrays in Python. Discover efficient algorithms and code examples to solve the common elements problem.
Determine if a 9x9 Sudoku Board is Valid
Sun Jul 14 2024
5 min read
Learn how to determine if a 9x9 Sudoku board is valid in Python. Explore efficient algorithms and Python code examples to check for row, column, and sub grid uniqueness in a Sudoku puzzle.
Check if the given Linked List is Palindrome
Thu Aug 01 2024
5 min read
Learn how to check if a linked list is a palindrome with simple steps. Understand linked lists, find the middle, reverse, compare nodes, and solve efficiently.
Remove Duplicates from a Sorted Array
Sat Jul 13 2024
5 min read
Learn how to remove duplicates from a sorted array in Python. Explore efficient algorithms to eliminate duplicate elements while maintaining the sorted order.
Spiral Matrix in Python
Sun Jul 21 2024
5 min read
Solve the Spiral Matrix problem in Python. Learn algorithms to traverse a matrix in a spiral order with Python code and detailed explanations for optimal solutions.
Valid Palindrome in Python
Sat Jul 20 2024
5 min read
Learn how to solve the Valid Palindrome in Python. Discover Python examples to check if a string is a palindrome, ignoring spaces, punctuation, and case sensitivity.
Reverse a String in Python
Wed Jul 17 2024
5 min read
Learn how to reverse a string in Python with efficient algorithms. Explore step-by-step solutions and Python code examples for reversing strings, from simple to advanced methods.
Range Sum of BST
Wed Aug 21 2024
5 min read
Learn how to solve the Range Sum of BST problem in simple steps. Explore BST traversal, sum node values in a range, and optimize tree algorithms efficiently.
Cracking FAANG Coding Interviews
Sun Aug 25 2024
5 min read
Prepare for FAANG interviews with practical coding challenges. Master data structures, algorithms, and problem-solving techniques to crack interviews at top tech companies.
3Sum in Python
Sat Jul 20 2024
5 min read
Solve the "3Sum" problem in Python. Learn efficient algorithms and step-by-step code examples to find all unique triplets in an array that sum to zero using Python.
Find Middle of the Linked List
Sun Aug 18 2024
5 min read
Learn how to find the middle of a linked list using the two-pointer technique. Simple steps to identify the middle node in odd and even-sized linked lists.
Finding the Single Number in an Array
Sun Jul 14 2024
5 min read
Learn how to find the single number in an array in Python. Explore efficient algorithms examples to identify the unique element in an array where every other number appears twice.
How to Rotate an Array in Python
Sun Jul 14 2024
5 min read
Learn how to rotate an array in Python. Explore algorithms and step-by-step Python code examples to rotate arrays by a given number of positions, both left and right.
Plus One to a Number
Sun Jul 14 2024
5 min read
Learn how to add one to a number represented as an array of digits in Python. Explore efficient algorithms and step-by-step Python code examples to solve the "Plus One" problem with arrays.
Find Duplicate Elements in an Array
Sun Jul 14 2024
5 min read
Learn how to find duplicate elements in an array in Python. Discover efficient algorithms to identify and remove duplicates from an array using Python.
Longest Substring Without Repeating Character
Sat Jul 20 2024
5 min read
Explore the longest substring without repeating character in Python. Explore algorithms to find the longest unique substring in a string without duplicates.
Delete Node in a Linked List
Sat Jul 27 2024
5 min read
Learn how to delete a node in a linked list efficiently in Python. Explore linked list operations, dynamic memory, and coding interview techniques.
Product of Array Except Self in Python
Sun Jul 21 2024
5 min read
Learn how to solve the "Product of Array Except Self" problem in Python. Discover Python code examples to calculate the product of array elements.
Longest Consecutive Sequence in Python
Mon Jul 22 2024
5 min read
Solve the Longest Consecutive Sequence problem in Python. Learn how to find the longest sequence of consecutive numbers using efficient Python algorithms.
Longest Common Prefix
Wed Jul 17 2024
5 min read
Discover the "Longest Common Prefix" problem with this guide. Learn efficient algorithms, and Python code examples to find the longest common prefix of strings.
Detect a Cycle in Linked List
Thu Aug 01 2024
5 min read
Learn how to detect a cycle in a linked list using the slow and fast pointer technique. Simple steps to check loops, avoid errors, and solve linked list problems.
Greatest Common Divisor of Strings
Thu Jul 11 2024
5 min read
Discover how to find the Greatest Common Divisor (GCD) of strings in Python. Learn efficient algorithms and examples to determine the largest string that can divide two given strings.
Best Time to Buy and Sell Stock
Sun Jul 14 2024
5 min read
Learn the best time to buy and sell stock with Python. Discover efficient algorithm examples to solve the "Best Time to Buy and Sell Stock" problem and maximize profit.
Move All Zeroes to the End of an Array
Sun Jul 14 2024
5 min read
Learn how to move all zeroes to the end of an array in Python. Discover efficient algorithms and step-by-step code examples to solve this common array manipulation problem.
50 Latest Python Interview Questions in 2025
Sat Sep 21 2024
5 min read
Ace your Python interviews. Covering Python interview questions, data structures, memory management, PEP8, OOP, functions, and more. Learn Python programming skills and succeed in job interviews!
Check for Balanced Parentheses
Sun Aug 18 2024
5 min read
Learn how to check for balanced parentheses using a stack. Step-by-step guide to validate bracket pairs like (), {}, and [] in strings with simple logic.
How to Reverse a Linked List in Python
Mon Jul 29 2024
5 min read
Learn how to reverse a linked list in Python with our easy tutorial. Explore step-by-step algorithms, and best practices to solve reverse linked list problem in Python.
First Missing Positive in Python
Sun Jul 21 2024
5 min read
Learn how to solve the First Missing Positive problem in Python. Discover step-by-step code examples to find the smallest missing positive integer in an unsorted array.
Sliding Window Maximum in Python
Mon Jul 22 2024
5 min read
Learn the Sliding Window Maximum problem in Python. Learn efficient techniques to find the maximum element in a sliding window using Python algorithms.
Valid Anagram in Python
Thu Jul 18 2024
5 min read
Learn how to solve the "Valid Anagram" problem. Discover algorithms and Python examples to check if two strings are anagrams by comparing their character frequencies.
Kids with the Greatest Number of Candies
Fri Jul 12 2024
5 min read
Find the solution to the "Kids with the Greatest Number of Candies" problem in Python. Learn how to efficiently determine which kids can have the most candies based on their current count.
Merge Two Sorted Lists
Tue Jul 30 2024
5 min read
Learn how to merge two sorted lists with our step-by-step guide. Discover efficient algorithms, and solution of merge two sorted linked list in Python.
How to Delete Middle Element from a Stack
Mon Aug 19 2024
5 min read
Learn how to delete the middle element from a stack with simple steps. Step-by-step guide to solve stack problems using recursion and stack operations.
Two Sum Problem
Sun Jul 14 2024
5 min read
Explore the "Two Sum" problem with this complete guide in Python. Learn efficient algorithms, step-by-step solutions, and Python code examples to find two numbers that add up to a target sum.
Minimum Window Substring in Python
Tue Jul 23 2024
5 min read
Learn how to solve the Minimum Window Substring problem in Python. Find the smallest substring that contains all characters using Python algorithms.
Container with Most Water in Python
Sun Jul 21 2024
5 min read
Learn the "Container with Most Water" problem in Python. Learn efficient solutions and algorithms to maximize water container area using Python code examples.
Longest Palindromic Substring
Sat Jul 20 2024
5 min read
Solve the Longest Palindromic Substring problem in Python. Learn step-by-step code examples to find the longest palindrome within a string using Python.