Leetcode 0251. Flatten 2D Vector

Posted on Fri 22 November 2024 in Leetcode Premium • Tagged with iterator

Question Link : https://leetcode.com/problems/flatten-2d-vector/

Difficulty: Medium

Premium: True

Question

Design an iterator to flatten a 2D vector. It should support the next and hasNext operations. Implement the Vector2D class:

Vector2D(int[][] vec) initializes the object with the 2D vector vec. next() returns the next element from the …


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