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767. Reorganize String

Posted on 2025-02-12 Edited on 2025-06-14 In Leetcode

767. Reorganize String

Description

Given a string s, rearrange the characters of s so that any two adjacent characters are not the same.

103. Binary Tree Zigzag Level Order Traversal

Posted on 2025-02-12 Edited on 2025-06-14 In Leetcode

103. Binary Tree Zigzag Level Order Traversal

Description

Given the root of a binary tree, return the zigzag level order traversal of its nodes’ values. (i.e., from left to right, then right to left for the next level and alternate between).

328. Odd Even Linked List

Posted on 2025-02-09 Edited on 2025-06-14 In Leetcode

328. Odd Even Linked List

Description

Given the head of a singly linked list, group all the nodes with odd indices together followed by the nodes with even indices, and return the reordered list.

1047. Remove All Adjacent Duplicates In String

Posted on 2025-02-03 Edited on 2025-06-14 In Leetcode

1047. Remove All Adjacent Duplicates In String

Description

You are given a string s consisting of lowercase English letters. A duplicate removal consists of choosing two adjacent and equal letters and removing them.