Complete solution for LeetCode Two Sum problem with efficient algorithms, multiple approaches, and code implementations in C++, Java, and Python.
Convert a binary number represented as a linked list (with each node containing 0 or 1) to its equivalent decimal integer.
Count numbers which has even number of digits.
You will learn in-place array transformations.
Learn the optimal solution for LeetCode 1957: Delete minimum characters to prevent three consecutive identical characters. Code Implementations included.
Efficient approaches to find all unique 3-digit even numbers from digits.
Multiple approaches including Substring with Padding, Two-Pointer Technique, Iterative Character Collection, and Mathematical Grouping with C++, Java, Python.
Determine triangle type using multiple approaches including direct comparison, sorting optimization, and set-based type detection.
Complete solution for LeetCode 3136 Valid Word problem with multiple approaches, detailed explanations, and code implementations.
Count subarrays where sum of first and third elements equals half of the second element.
Count when sum of the left and right subarrays is even.
Efficient approaches to find maximum difference between even and odd character frequencies in strings, including optimized single-pass methods.
Optimal O(n) solution with distinct positives approach. Learn multiple methods to solve the maximum unique subarray sum problem after deletion.
Maximum Product using digit extraction and sorting.
Discover optimal methods to find maximum vowel and consonant frequencies.
Learn optimal strategies to minimize deletions while maintaining character diversity.
Multiple approaches like Modulo Division, String Conversion Method, Precomputed Digit Sums.
Multiple approaches to check if any array element has prime frequency using Frequency Map, Frequency Array with Prime Precomputation, Set of Prime Frequencies.
Learn efficient digit extraction techniques and multiple approaches to solve divisibility problems with detailed implementations.
Efficient approaches to set matrix zeroes in-place including O(1) space optimization and various implementation methods.
Two efficient approaches: Force Propagation and BFS Simulation.
Efficient O(n log max) solution using dynamic programming with sets.
Efficient approaches to find maximum difference from digit replacement operations, including greedy algorithms and optimized methods.
LeetCode 1695: Maximum Erasure Value using sliding window and prefix sum techniques. Detailed explanations and implementations.
Find the maximum XOR result for each query on an array.
Learn multiple methods to solve the maximum bitwise AND subarray problem with detailed implementations.
Count how many subarrays contain all distinct elements present in the original array.
Learn optimal strategies to balance array sums by replacing zeros.
Count all subarrays where the maximum element appears at least k times
Find the minimum possible length of string after performing operations.
This problem requires understanding of graph algorithms and dynamic programming.
Efficient approaches to calculate string length after transformations using frequency mapping and mathematical optimization.
Learn efficient methods to partition grids into equal sums.
Efficient approaches to calculate minimum swaps for digit-sum sorting using cycle detection and custom comparators.
Efficient approaches to partition an array into two subsets with equal product, including prime factorization and bitmasking techniques.
LeetCode 3587 with efficient algorithms, multiple approaches, and code implementations in C++, Java, and Python.
Learn efficient prime identification techniques and multiple approaches to solve the array splitting problem.
Learn efficient island counting techniques using DFS, BFS, and iterative methods with detailed implementations.
Construct a 2N x 2N grid where each quadrant follows strict ordering rules recursively.
Count all the subarrays where product of sum and length is less than k