eady complete, the next integer in the sequence will be returned.     For example:     Input: nums = [4, 1, 3, 0, 6, 5, 2]     Output: 7 """ def find_missing_n

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Returns the missing number from a sequence of unique integers
    in range [0..n] in O(n) time and space. The difference between
    consecutive integers cannot be more than 1. If the sequence is
    already complete, the next integer in the sequence will be returned.
    For example:
    Input: nums = [4, 1, 3, 0, 6, 5, 2]
    Output: 7
"""
def find_missing_number(nums):

    missing = 0
    for i, num in enumerate(nums):
        missing ^= num
        missing ^= i + 1

    return missing. 

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