Gray Code (Leetcode 89)

YouTube Excerpt: PLAY LISTS: May-2020 Leetcode challenge: https://www.youtube.com/playlist?list=PL_lPC-CADCvQFlIZK6GuJrz2gZud8jdPd Arrays https://www.youtube.com/watch?v=lI5KoSWbKGo&list=PL_lPC-CADCvSSU3KSchuIysoJoIV_i0No Binary Search: https://www.youtube.com/playlist?list=PL_lPC-CADCvTaIPt3g0akqATYkr-NI87Y Easy Problems: https://www.youtube.com/playlist?list=PL_lPC-CADCvTwmZqVktnh_htvXn5p_ABu Medium Problems: https://www.youtube.com/playlist?list=PL_lPC-CADCvT-pL1bZbY7mjGm_yevmRL4 Hard Problems: https://www.youtube.com/playlist?list=PL_lPC-CADCvQ26UpbzvV1sM0h_IIs0Xlj Divide and Conquer: https://www.youtube.com/playlist?list=PL_lPC-CADCvTuh1SwR4NsS6zqy2a-d1Y2 Greedy: https://www.youtube.com/playlist?list=PL_lPC-CADCvRk7pwBgY_LgFip8TtMltCZ Interview Tips: https://www.youtube.com/playlist?list=PL_lPC-CADCvR24lvSSwYQQuL-Xt6qh48l DFS: https://www.youtube.com/playlist?list=PL_lPC-CADCvSt_tLBS7ktGcV0jLD4mRXh BFS: https://www.youtube.com/playlist?list=PL_lPC-CADCvRr4srfNPMZ8ziAEPEpCXbP Backtracking: https://www.youtube.com/playlist?list=PL_lPC-CADCvRV2vbbZC6ELLZHV0Rp3_8V Dynamic Programming: https://www.youtube.com/playlist?list=PL_lPC-CADCvSFaErThMwvheODEeoSDc6f Queues: https://www.youtube.com/playlist?list=PL_lPC-CADCvR0XUS5GHOQDia5dHGXanPh Design: https://www.youtube.com/playlist?list=PL_lPC-CADCvR1FCYxx_ekFqKUvThjZV5t Stacks: https://www.youtube.com/playlist?list=PL_lPC-CADCvTcgeWr4qAexnEI-d5Jmx_Y LinkedList: https://www.youtube.com/playlist?list=PL_lPC-CADCvSrE1-yQh9ej9OQVXRmD7jW Strings: https://www.youtube.com/playlist?list=PL_lPC-CADCvSRKTJcAxtkJEGuP87K3E2J Sorting: https://www.youtube.com/playlist?list=PL_lPC-CADCvRBb0DkPgBdslBIdoPpEPdg Tries: https://www.youtube.com/playlist?list=PL_lPC-CADCvRoWf4vY71-MXwBJI_EKrvs Graphs: https://www.youtube.com/playlist?list=PL_lPC-CADCvQKZisgcyw21xBp5sLZ3Sq5 Trees: https://www.youtube.com/playlist?list=PL_lPC-CADCvQxHlYGdZOWXvvE3fva1D6h BIT Operations: https://www.youtube.com/playlist?list=PL_lPC-CADCvTlygb72CCczUwTMAgx-1bN netflix, amazon, microsoft, linkedin, apple, google, facebook Amazon, Microsoft, Google, Facebook, Netflix, Apple The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. Example 1: Input: 2 Output: [0,1,3,2] Explanation: 00 - 0 01 - 1 11 - 3 10 - 2 For a given n, a gray code sequence may not be uniquely defined. For example, [0,2,3,1] is also a valid gray code sequence. 00 - 0 10 - 2 11 - 3 01 - 1 Example 2: Input: 0 Output: [0] Explanation: We define the gray code sequence to begin with 0. A gray code sequence of n has size = 2n, which for n = 0 the size is 20 = 1. Therefore, for n = 0 the gray code sequence is [0].

PLAY LISTS: May-2020 Leetcode challenge: https://www.youtube.com/playlist?list=PL_lPC-CADCvQFlIZK6GuJrz2gZud8jdPd Arrays...

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