Given an array of n-1 numbers where 1<=a[i]<=n, how do you find the missing number from the array?
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Given an array of n-1 numbers 1<=a[i]<=n, find the missing number.
Calculate the sum of all numbers from 1 to n using the formula n*(n+1)/2
Calculate the sum of all elements in the array
Subtract the sum...read more
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