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Rank Transform of an Array - Leetcode 1331 - Java

7:01

Check If Array Pairs Are Divisible by k - Leetcode 1497 - Java

9:15

All O`one Data Structure - Leetcode 432 - Java

17:00

Design Circular Deque

17:33

Lexicographical Numbers - Leetcode 368 - Java

14:18

Largest Number - Leetcode 179 - Java

7:30

Divide Players Into Teams of Equal Skill - Leetcode 2491 - Java

Problem Description
You are given a positive integer array skill of even length n where skill[i] denotes the skill of the ith player. Divide the players into n / 2 teams of size 2 such that the total skill of each team is equal.
The chemistry of a team is equal to the product of the skills of the players on that team.
Return the sum of the chemistry of all the teams, or return -1 if there is no way to divide the players into teams such that the total skill of each team is equal.
Problem: leetcode.com/problems/divide-players-into-teams-of-equal-skill/
Code link: k5kc.com/cs/algorithms/divide-players-into-teams-of-equal-skill-problem/

Відео

Rank Transform of an Array - Leetcode 1331 - Java

7:01

Rank Transform of an Array - Leetcode 1331 - Java

Переглядів 189 годин тому

Problem Description Given an array of integers arr, replace each element with its rank. The rank represents how large the element is. The rank has the following rules: Rank is an integer starting from 1. The larger the element, the larger the rank. If two elements are equal, their rank must be the same. Rank should be as small as possible. Problem: leetcode.com/problems/rank-transform-of-an-arr...

Check If Array Pairs Are Divisible by k - Leetcode 1497 - Java

9:15

Check If Array Pairs Are Divisible by k - Leetcode 1497 - Java

Переглядів 1912 годин тому

Problem Description Given an array of integers arr of even length n and an integer k. We want to divide the array into exactly n / 2 pairs such that the sum of each pair is divisible by k. Return true If you can find a way to do that or false otherwise. Problem: leetcode.com/problems/check-if-array-pairs-are-divisible-by-k/ Code link: k5kc.com/cs/algorithms/sum-of-all-subset-xor-totals/

All O`one Data Structure - Leetcode 432 - Java

17:00

All O`one Data Structure - Leetcode 432 - Java

Переглядів 4016 годин тому

Problem Description Design a data structure to store the strings' count with the ability to return the strings with minimum and maximum counts. Implement the AllOne class: AllOne() Initializes the object of the data structure. inc(String key) Increments the count of the string key by 1. If key does not exist in the data structure, insert it with count 1. dec(String key) Decrements the count of ...

17:33

Design Circular Deque

Переглядів 2819 годин тому

Problem Description Design your implementation of the circular double-ended queue (deque). Implement the MyCircularDeque class: MyCircularDeque(int k) Initializes the deque with a maximum size of k. boolean insertFront() Adds an item at the front of Deque. Returns true if the operation is successful, or false otherwise. boolean insertLast() Adds an item at the rear of Deque. Returns true if the...

Lexicographical Numbers - Leetcode 368 - Java

14:18

Lexicographical Numbers - Leetcode 368 - Java

Переглядів 3614 днів тому

Problem Description Given an integer n, return all the numbers in the range [1, n] sorted in lexicographical order. You must write an algorithm that runs in O(n) time and uses O(1) extra space. Problem: leetcode.com/problems/lexicographical-numbers/description/ Code link: k5kc.com/cs/algorithms/lexicographical-numbers-problem/

7:30

Largest Number - Leetcode 179 - Java

Переглядів 3214 днів тому

Problem Description Given a list of non-negative integers nums, arrange them such that they form the largest number and return it. Since the result may be very large, so you need to return a string instead of an integer. Problem: leetcode.com/problems/largest-number/ Code link: k5kc.com/cs/algorithms/largest-number-from-given-numbers/

Uncommon Words from Two Sentences - Leetcode 884 - Java

6:00

Uncommon Words from Two Sentences - Leetcode 884 - Java

Переглядів 3014 днів тому

Problem Description A sentence is a string of single-space-separated words where each word consists only of lowercase letters. A word is considered uncommon if it appears exactly once in one of the sentences and does not appear in the other sentence. Given two sentences, s1 and s2, we need to return a list of all the uncommon words. The answer can be returned in any order." Problem: leetcode.co...

Minimum Time Difference - Leetcode 539 - Java

9:21

Minimum Time Difference - Leetcode 539 - Java

Переглядів 2014 днів тому

Problem Description Given a list of 24-hour clock time points in "HH:MM" format, return the minimum minutes difference between any two time-points in the list. Problem: leetcode.com/problems/minimum-time-difference/description/ Code link: k5kc.com/cs/algorithms/minimum-time-difference-problem/

Find the Longest Substring Containing Vowels in Even Counts - Leetcode 1371 - Java

14:47

Find the Longest Substring Containing Vowels in Even Counts - Leetcode 1371 - Java

Переглядів 2821 день тому

Problem Description Given the string s, return the size of the longest substring containing each vowel an even number of times. That is, 'a', 'e', 'i', 'o', and 'u' must appear an even number of times. Problem: leetcode.com/problems/find-the-longest-substring-containing-vowels-in-even-counts/description/ Code link: k5kc.com/cs/algorithms/find-the-longest-substring-containing-vowels-in-even-coun...

Longest Subarray With Maximum Bitwise AND

5:49

Longest Subarray With Maximum Bitwise AND

Переглядів 3821 день тому

Problem Description You are given an integer array nums of size n. Consider a non-empty subarray from nums that has the maximum possible bitwise AND. In other words, let k be the maximum value of the bitwise AND of any subarray of nums. Then, only subarrays with a bitwise AND equal to k should be considered. Return the length of the longest such subarray. The bitwise AND of an array is the bitw...

Understanding Binary Magic: How n & (n-1) Works

4:58

Understanding Binary Magic: How n & (n-1) Works

Переглядів 2321 день тому

Welcome to another deep dive into the world of bit manipulation! In this video, we explore the fascinating operation of n & (n - 1). This simple yet powerful technique is widely used in various algorithms and applications, from counting set bits to determining if a number is a power of two. More details: k5kc.com/cs/algorithms/x-x-1-explained/

9:36

XOR Queries of a Subarray

Переглядів 3321 день тому

Problem Description You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti]. For each query i compute the XOR of elements from lefti to righti (that is, arr[lefti] XOR arr[lefti 1] XOR ... XOR arr[righti] ). Return an array answer where answer[i] is the answer to the ith query. Problem: leetcode.com/problems/xor-queries-of-a-subar...

Count the Number of Consistent Strings - Leetcode 1684 - Java | Naive and using Hashset and Bitmasks

11:31

Count the Number of Consistent Strings - Leetcode 1684 - Java | Naive and using Hashset and Bitmasks

Переглядів 2921 день тому

Problem Description You are given a string allowed consisting of distinct characters and an array of strings words. A string is consistent if all characters in the string appear in the string allowed. Return the number of consistent strings in the array words. Problem: leetcode.com/problems/count-the-number-of-consistent-strings/ Code link: k5kc.com/cs/algorithms/count-the-number-of-consistent-...

Number of 1 Bits - Leetcode 191 - Java | Brian Kernighan's Algorithm

5:51

Number of 1 Bits - Leetcode 191 - Java | Brian Kernighan's Algorithm

Переглядів 1721 день тому

Number of 1 Bits - Leetcode 191 - Java | Brian Kernighan's Algorithm

Number of 1 Bits - Leetcode 191 - Java | 3 Easy Methods

7:59

Number of 1 Bits - Leetcode 191 - Java | 3 Easy Methods

Переглядів 2421 день тому

Number of 1 Bits - Leetcode 191 - Java | 3 Easy Methods

Insert Greatest Common Divisors in Linked Lis

7:59

Insert Greatest Common Divisors in Linked Lis

Переглядів 1221 день тому

Insert Greatest Common Divisors in Linked Lis

10:00

Spiral Matrix IV - Leetcode 2326 - Java

Переглядів 1321 день тому

Spiral Matrix IV - Leetcode 2326 - Java

Split Linked List in Parts - Leetcode 725 - Java

8:18

Split Linked List in Parts - Leetcode 725 - Java

Переглядів 3128 днів тому

Split Linked List in Parts - Leetcode 725 - Java

Linked List in Binary Tree - Leetcode 1367 - Java

7:38

Linked List in Binary Tree - Leetcode 1367 - Java

Переглядів 5228 днів тому

Linked List in Binary Tree - Leetcode 1367 - Java

Delete Nodes From Linked List Present in Array - Leetcode 3217 - Java

6:35

Delete Nodes From Linked List Present in Array - Leetcode 3217 - Java

Переглядів 17Місяць тому

Delete Nodes From Linked List Present in Array - Leetcode 3217 - Java

Find Missing Observations - Leetcode 2028 - Java

9:53

Find Missing Observations - Leetcode 2028 - Java

Переглядів 34Місяць тому

Find Missing Observations - Leetcode 2028 - Java

Walking Robot Simulation - Leetcode 874 - Java

10:13

Walking Robot Simulation - Leetcode 874 - Java

Переглядів 33Місяць тому

Walking Robot Simulation - Leetcode 874 - Java

Sum of Digits of String After Convert - Leetcode 1945 - Java

8:00

Sum of Digits of String After Convert - Leetcode 1945 - Java

Переглядів 33Місяць тому

Sum of Digits of String After Convert - Leetcode 1945 - Java

Find the Student that Will Replace the Chalk - Leetcode 1894 - Java

6:12

Find the Student that Will Replace the Chalk - Leetcode 1894 - Java

Переглядів 40Місяць тому

Find the Student that Will Replace the Chalk - Leetcode 1894 - Java

Convert 1D Array Into 2D Array - Leetcode 2022 - Java

9:49

Convert 1D Array Into 2D Array - Leetcode 2022 - Java

Переглядів 39Місяць тому

Convert 1D Array Into 2D Array - Leetcode 2022 - Java

Path with Maximum Probability - Leetcode 1514 - Java

14:22

Path with Maximum Probability - Leetcode 1514 - Java

Переглядів 39Місяць тому

Path with Maximum Probability - Leetcode 1514 - Java

18:26

2 Keys Keyboard - Leetcode 650 - Java

Переглядів 16Місяць тому

2 Keys Keyboard - Leetcode 650 - Java

Most Stones Removed with Same Row or Column - Leetcode 947 - Java

9:19

Most Stones Removed with Same Row or Column - Leetcode 947 - Java

Переглядів 18Місяць тому

Most Stones Removed with Same Row or Column - Leetcode 947 - Java

Count Sub Islands - Leetcode 1905 - Java

11:31

Count Sub Islands - Leetcode 1905 - Java

Переглядів 22Місяць тому

Count Sub Islands - Leetcode 1905 - Java

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