Given a sorted array of integers from 0 to n, write a function to find the number that introduces a problem. Your solution should have a time complexity of O(log n).
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Interview question asked to Machine Learning Engineers interviewing at Pinterest, Groupon, Grammarly and others: Given a sorted array of integers from 0 to n, write a function to find the number that introduces a problem. Your solution should have a time complexity of O(log n)..