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[LeetCode] Problem 622 - Design Circular Queue

Posted on 2019-03-30 | In Algorithm , LeetCode
Design your implementation of the circular queue. The circular queue is a linear data structure in which the operations are performed based on FIFO (F ...
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[LeetCode] Problem 707 - Design Linked List

Posted on 2019-03-30 | In Algorithm , LeetCode
Design your implementation of the linked list. You can choose to use the singly linked list or the doubly linked list. A node in a singly linked list ...
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[LeetCode] Problem 705 - Design HashSet

Posted on 2019-03-30 | In Algorithm , LeetCode
Design a HashSet without using any built-in hash table libraries. To be specific, your design should include these functions: add(value): Insert a val ...
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[LeetCode] Problem 706 - Design HashMap

Posted on 2019-03-29 | In Algorithm , LeetCode
Design a HashMap without using any built-in hash table libraries. To be specific, your design should include these functions: put(key, value) : Insert ...
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[LeetCode] Problem 232 - Implement Queue using Stacks

Posted on 2019-03-29 | In Algorithm , LeetCode
Implement the following operations of a queue using stacks. push(x) – Push element x to the back of queue.pop() – Removes the element from in front of ...
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[LeetCode] Problem 225 - Implement Stack using Queues

Posted on 2019-03-28 | In Algorithm , LeetCode
Implement the following operations of a stack using queues. push(x) – Push element x onto stack.pop() – Removes the element on top of the stack.top() ...
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[LeetCode] Problem 377 - Combination Sum IV

Posted on 2019-03-28 | In Algorithm , LeetCode
Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. ...
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[LeetCode] Problem 538 - Convert BST to Greater Tree

Posted on 2019-03-28 | In Algorithm , LeetCode
Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all ...
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[LeetCode] Problem 216 - Combination Sum III

Posted on 2019-03-28 | In Algorithm , LeetCode
Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be ...
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[LeetCode] Problem 40 - Combination Sum II

Posted on 2019-03-27 | In Algorithm , LeetCode
Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numb ...
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mrlonelyjtr

mrlonelyjtr

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