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![Insert Delete GetRandom O(1) | Day 12 | [June LeetCoding Challenge] [Leetcode #380] [2020]](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FyeTmZxk6-v4%2Fhq720.jpg%3Fsqp%3D-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE%3D%26rs%3DAOn4CLApGd-wNkl2FS9nJEAhxeRnQ9oqXA&w=256&q=75)
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