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97 lines
2.8 KiB
TypeScript
97 lines
2.8 KiB
TypeScript
//ProjectEulerTS/Problems/Problem3.ts
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//Matthew Ellison
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// Created: 10-19-20
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//Modified: 07-14-21
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//The largest prime factor of 600851475143
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//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/typescriptClasses
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/*
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Copyright (C) 2021 Matthew Ellison
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { Problem } from "./Problem";
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import { getFactors } from "../../../Typescript/typescriptClasses/NumberAlgorithms";
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export class Problem3 extends Problem{
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//Variables
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//Static variables
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private static GOAL_NUMBER: number = 600851475143; //The number that needs factored
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//Instance variables
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private factors: number[]; //Holds the factors of goalNumber
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//Functions
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//Constructor
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public constructor(){
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super(`What is the largest prime factor of ${Problem3.GOAL_NUMBER}`);
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this.factors = [];
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}
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//Operational functions
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//Solve the problem
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public solve(): void{
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//If the problem has already been solved do nothing and end the function
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if(this.solved){
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return;
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}
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//Start the timer
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this.timer.start();
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//Get all the factors of the number
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this.factors = getFactors(Problem3.GOAL_NUMBER);
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//The last element should be the largest factor
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//Stop the timer
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this.timer.stop();
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//Throw a flag to show the problem is solved
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this.solved = true;
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}
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//Reset the problem so it can be run again
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public reset(): void{
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super.reset();
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this.factors = [];
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}
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//Gets
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//Returns the result of solving the problem
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public getResult(): string{
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this.solvedCheck("result");
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return `The largest factor of the number ${Problem3.GOAL_NUMBER} is ${this.factors[this.factors.length - 1]}`;
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}
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//Returns the list of factors of the number
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public getFactors(): number[]{
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this.solvedCheck("factors");
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return this.factors;
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}
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//Returns the largest factor of the number
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public getLargestFactor(): number{
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this.solvedCheck("largest factor");
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return this.factors[this.factors.length];
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}
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//Returns the number for which we are getting the factor
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public getGoalNumber(): number{
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return Problem3.GOAL_NUMBER;
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}
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}
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/* Results:
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The largest factor of the number 600851475143 is 6857
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It took an average of 56.397 milliseconds to run this problem through 100 iterations
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*/
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