How to resolve the algorithm Generator/Exponential step by step in the XPL0 programming language

Published on 12 May 2024 09:40 PM
#Xpl0

How to resolve the algorithm Generator/Exponential step by step in the XPL0 programming language

Table of Contents

Problem Statement

A generator is an executable entity (like a function or procedure) that contains code that yields a sequence of values, one at a time, so that each time you call the generator, the next value in the sequence is provided. Generators are often built on top of coroutines or objects so that the internal state of the object is handled “naturally”. Generators are often used in situations where a sequence is potentially infinite, and where it is possible to construct the next value of the sequence with only minimal state.

Note that this task requires the use of generators in the calculation of the result.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Generator/Exponential step by step in the XPL0 programming language

Source code in the xpl0 programming language

code ChOut=8, IntOut=11;

func Gen(M);            \Generate Mth powers of positive integers
int  M;
int  N, R, I;
[N:= [0, 0, 0, 0];      \provides own/static variables
R:= 1;
for I:= 1 to M do R:= R*N(M);
N(M):= N(M)+1;
return R;
];

func Filter;            \Generate squares of positive integers that aren't cubes
int  S, C;
[C:= [0];               \static variable = smallest cube > current square
repeat  S:= Gen(2);
        while S > C(0) do C(0):= Gen(3);
until   S # C(0);
return S;
];

int  I;
[for I:= 1 to 20 do Filter;                             \drop first 20 values
 for I:= 1 to 10 do [IntOut(0, Filter);  ChOut(0, ^ )]; \show next 10 values
]

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