1,2,3,4,5,6,7,8,9 What is the time complexity of finding the missing number in the sequence?
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Find the Missing Number
You are given a list of n-1 integers and these integers are in the range of 1 to n. There are no duplicates in the list. One of the integers is missing in the list. Write an efficient code to find the missing integer.
Example:
Input: arr[] = {1, 2, 4, 6, 3, 7, 8}
Output: 5
Explanation: The missing number from 1 to 8 is 5
Input: arr[] = {1, 2, 3, 5}
Output: 4
Explanation: The missing number from 1 to
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