Bloomberg interview question

Given an array of integers, delete the max and min numbers (both could appear more than once) in place. Do it in O(n) without shifting.

Interview Answers

Anonymous

10 Feb 2016

You could do in one loop, with two cursors :)

1

Anonymous

15 Jan 2016

Go through the array twice. In the first run save the min and max, in the second run remove them. Both steps are O(N), so the entire algo is also O(N), it does not matter that the array is walked twice.

1

Anonymous

10 Feb 2016

1. find max and min in first loop 2. In second loop following if element is min/max = simply increment a counter else a[i-counter] = a[i].

2

Anonymous

10 Feb 2016

1. find max and min in first loop. 2. In second loop if a[i] is min/max then simply increment a counter else a[i-counter] = a[i].