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Abstract  Given an integer array  A , the  prefix‐sum problem  is to answer   sum ( i )  queries that return the sum of the elements in   A [0.. i ] , knowing that the integers in  A  can be changed. It is a classic problem in data structure design with a wide range of applications in computing from coding to databases. In this work, we propose and compare practical solutions to this problem, showing that new trade‐offs between the performance of queries and updates can be achieved on modern hardware.

Practical trade‐offs for the prefix‐sum problem