Question: I'm trying to do my Java homework and I got stuck. Can someone help? Design an O(n) time algorithm for computing the sum of numbers

I'm trying to do my Java homework and I got stuck. Can someone help?

Design an O(n) time algorithm for computing the sum of numbers from n1 to n2 for (n1 < n2). Can you design an O(1) for performing the same task?

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