a) Write a Python function PrimPyth(n) which returns a list of primitive Pythagorean triples where (x,y,z) where 0 < x < y < z < n . For example, PrimPyth(6) should return [(3,4,5)]. Hint: In this project we represent triples as tuples (x,y,z) not as lists [x,y,z]. The two data-types behave similarly in many ways. Do not write a triply nested loop which searches through all triples (x,y,z) as this will take n^3 steps! Instead, use the fact (proved by Euclid) that every primitive Pythagorean triple arises as (m^2 - n^2, 2mn, m^2 +n^2). where are coprime integers which are not both odd. (Of course the first two entries may be swapped.)
a) Write a Python function PrimPyth(n) which returns a list of primitive Pythagorean triples where (x,y,z) where 0 < x < y < z < n . For example, PrimPyth(6) should return [(3,4,5)]. Hint: In this project we represent triples as tuples (x,y,z) not as lists [x,y,z]. The two data-types behave similarly in many ways. Do not write a triply nested loop which searches through all triples (x,y,z) as this will take n^3 steps! Instead, use the fact (proved by Euclid) that every primitive Pythagorean triple arises as (m^2 - n^2, 2mn, m^2 +n^2). where are coprime integers which are not both odd. (Of course the first two entries may be swapped.)
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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a) Write a Python function PrimPyth(n) which returns a list of primitive Pythagorean triples
where (x,y,z) where 0 < x < y < z < n
. For example, PrimPyth(6) should return [(3,4,5)]. Hint: In this project we represent triples as tuples (x,y,z) not as lists [x,y,z]. The two data-types behave similarly in many ways. Do not write a triply nested loop which searches through all triples (x,y,z) as this will take n^3
steps! Instead, use the fact (proved by Euclid) that every primitive Pythagorean triple arises as (m^2 - n^2, 2mn, m^2 +n^2). where
are coprime integers which are not both odd. (Of course the first two entries may be swapped.)
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