The following algorithm adds all the entries in the “upper triangular” part of a square n × n array A. Consider n = 5 and the 5 × 5 array below. The work unit is the addition operation, sum = sum + A[k, j]. How many times is the sum = sum + A[k, j] operation done? sum = 0 for k = 1 to n do for j = k to n do sum = sum + A[k, j] end for end for 1 3 1 0 2 3 1 0 3 3 0 0 1 2 0 0 2 3 1 2 2 2 3 0 1
The following algorithm adds all the entries in the “upper triangular” part of a square n × n array A. Consider n = 5 and the 5 × 5 array below. The work unit is the addition operation, sum = sum + A[k, j]. How many times is the sum = sum + A[k, j] operation done? sum = 0 for k = 1 to n do for j = k to n do sum = sum + A[k, j] end for end for 1 3 1 0 2 3 1 0 3 3 0 0 1 2 0 0 2 3 1 2 2 2 3 0 1
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider n = 5 and the 5 × 5 array below. The work unit is the addition operation, sum = sum + A[k, j]. How many times is the sum = sum + A[k, j] operation done?
sum = 0
for k = 1 to n do
for j = k to n do
sum = sum + A[k, j]
end for
end for
1 | 3 | 1 | 0 | 2 |
3 | 1 | 0 | 3 | 3 |
0 | 0 | 1 | 2 | 0 |
0 | 2 | 3 | 1 | 2 |
2 | 2 | 3 | 0 | 1 |
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