Tag: leetcode

The back-end

A daily LeetCode (37) : Sum of two numbers II – enter an ordered array

February 2, 2024

by Steven Smith

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Given an ordered array that has been sorted in ascending order, find two numbers that add up to the target number. The function should return...

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The back-end

1748. Sum of Unique Elements: “Sort + double pointer” & “Hash table”

February 2, 2024

by Louise Evans

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"This is the 20th day of my participation in the first Text Challenge 2022. For details, see: The First Text Challenge 2022." This is 1748...

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The back-end

Leetcode – And the minimum number of Fibonacci digits for K

February 2, 2024

by Rasha Choudhury

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"This is the 20th day of my participation in the First Challenge 2022. For details: First Challenge 2022." After reading the solution of the problem,...

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The front end

[Luffy]_leetcode-1647- Character frequency The minimum number of unique deletions

February 2, 2024

by Iain Allen

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If there are no two different characters with the same frequency in the string S, it is said to be a good string.

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The back-end

23. Merge k Sorted Lists (Python)

February 2, 2024

by Judith Smith-Potter

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Leetcode 23. Merge k Sorted Lists (Python) looks at concatenation and sorting of multiple Lists

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The back-end

Maximum XOR of Two Numbers in an Array (Python)

February 2, 2024

by Gregory Harris

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Although it is Medium, I think it is a Hard question with a novel idea. It examines binary and Trie trees

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The front end

Write an introduction to linked lists for front-end development (JS)

February 2, 2024

by Brittany Robinson

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"This is the second day of my participation in the First Challenge 2022, for more details: First Challenge 2022". An array is a contiguous segment...

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The back-end

☆ Punch card algorithm ☆LeetCode 51, N Queen algorithm analysis

February 2, 2024

by Eshani Sule

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Hello everyone, I am a little Magic dragon, Unity3D software engineer, VR, AR, virtual simulation direction, update software development skills from time to time, life...

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The back-end

Leetcode 454. 4Sum II (Python)

February 2, 2024

by Shlok Sridhar

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Leetcode 454. 4Sum II (Python) Very simple problem, brute force solution will time out, so use dictionary to optimize time complexity

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The front end

Convert Roman numerals to integers (easy)

February 2, 2024

by Katie Lambert

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Roman numerals are 'I', 'V', 'X', 'L', 'C', 'D' and 'M'. They represent the seven modern numbers of '1', '5', '10', '50', '100', '500' and...

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The back-end

Leetcode

February 2, 2024

by Edward Goddard

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Description: Given a positive integer, split it into the sum of at least two positive integers and maximize the product of these integers. Returns the...

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The code of life

46. Translate numbers into strings

February 2, 2024

by Aaryahi Babu

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Given a number, we translate it as a string as follows: 0 to "a", 1 to "b"... 11 translated as "L"... 25 translates as "Z"....

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The front end

Force buckle [binary tree topics] 👊 404. Sum of left leaves

February 2, 2024

by 李雅玲

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"This is the 15th day of my participation in the 2022 First Revision Challenge. For details, see: 2022 First Revision Challenge" title link 404. Sum...

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The front end

Determine if a binary tree is a binary search tree

February 2, 2024

by 楊婷婷

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A binary tree is a balanced binary tree. A binary tree is a balanced binary tree. There are three solutions.

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The front end

LeetCode Exploration (30) : 914- Card grouping

February 2, 2024

by Alexandra Owens

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Given a deck of cards, each card has an integer written on it. At this point, you need to select a number X so that...

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The code of life

Leetcode: 0424

February 2, 2024

by Sumer Goyal

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Semi-vacation state of leisurely brush topic notes ~ is mainly to record the brush problem in the process of the first idea and see a...

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The front end

[luffy]_leetcode 2000. Reverse word prefixes

February 2, 2024

by Brooke Wright

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2000. Reversing the word prefix gives you a string word with subscripts starting at 0 and a character ch. Find the subscript I of the...

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The back-end

【 algorithm Exercise 29】84. Find the largest common divisor of an array

February 2, 2024

by Nehmat Chauhan

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This is the 24th day of my participation in the November more text challenge, the details of the activity view: 2021 the last more text...

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The front end

⚡ “Leetcode-offer” algorithm brush question essential, array theory basis

February 2, 2024

by Matiu Bell-Gilbert

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Although collections (containers) are used much more often than arrays in normal development, the underlying layers of collections are also implemented through arrays. And while...

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The back-end

Leetcode (3)

February 2, 2024

by Lisa Quinn

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Given an ordered sequence, to construct a binary search tree, each number can be traversed as the root, the sequence as the left subtree, will...

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The back-end

5 Leetcode questions in 3 minutes

February 2, 2024

by William Mendoza

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There is more than one answer to the Leetcode questions, which can be tuned based on feedback from CPU and memory usage.

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The back-end

LeetCode daily topic, the three most close to the sum of several | punch brush

February 2, 2024

by Brett Davies

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Title [Sum of the nearest three numbers](https://leetcode-cn.com/problems/3sum/) https://leetcode-cn.com/problems/3sum-closest/

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The back-end

The minimum Number of Fibonacci numbers and are K: Explain why the feasible solution is optimal if “each selection does not exceed the current maximum number of K”

February 2, 2024

by Roger Watson

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This is the 17th day of my participation in the First Revision Challenge 2022. For details, see: The First Revision Challenge 2022. And the minimum...

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The front end

[Luffy]_leetcode-179- Maximum number

February 2, 2024

by Stanley Watson

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Given a set of non-negative integers, nums, rearrange the order of each number (each number cannot be split) so that it forms the largest integer.

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The back-end

☆ Punch card algorithm ☆LeetCode 91, decoding method algorithm analysis

February 2, 2024

by Leon Gallagher

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Hello everyone, I am a little Magic dragon, Unity3D software engineer, VR, AR, virtual simulation direction, update software development skills from time to time, life...

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The front end

Luffy mission scheduler

February 2, 2024

by Anay Agarwal

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Tasks is a list of tasks that the CPU needs to perform. Each letter represents a different kind of task. Tasks can be executed in...

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The back-end

Leetcode 211. Design Add and Search Words Data Structure (Python)

February 2, 2024

by Dana Davis

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The first method uses Python's built-in re module to solve the problem, and the second method uses Trie and DFS recursion

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The front end

LeetCode HOT 100 15

February 2, 2024

by Jared Finley

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Given an array nums containing n integers, determine if there are three elements a, B, and c in nums such that a + b +...

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The front end

Finger Offer — Print matrix clockwise (JS implementation)

February 2, 2024

by Hiran Kaur

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The so-called path loop means that there is a loop in the path itself, that is, each time clockwise is a loop. After each loop,...

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The front end

[Luffy]_leetcode-470- Implement Rand10() with Rand7()

February 2, 2024

by Tessa McIntyre

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[B] Rand7 can generate uniform random integers in the range of 1 to 7. Try to write a method rand10 to generate uniform random integers...

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