Added solution to problem27

ProblemSelection.ts

@@ -50,12 +50,13 @@ import { Problem23 } from "./Problems/Problem23";
 import { Problem24 } from "./Problems/Problem24";
 import { Problem25 } from "./Problems/Problem25";
 import { Problem26 } from "./Problems/Problem26";
+import { Problem27 } from "./Problems/Problem27";
 
 
 export class ProblemSelection{
 	//Holds the valid problem numbers
 	public static PROBLEM_NUMBERS: number[] = [  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-												21, 22, 23, 24, 25, 26];
+												21, 22, 23, 24, 25, 26, 27];
 
 	//Returns the problem corresponding to the given problem number
 	public static getProblem(problemNumber: number): Problem{
@@ -87,6 +88,7 @@ export class ProblemSelection{
 			case 24: problem = new Problem24(); break;
 			case 25: problem = new Problem25(); break;
 			case 26: problem = new Problem26(); break;
+			case 27: problem = new Problem27(); break;
 		}
 		return problem;
 	}

Problems/Problem27.ts

@@ -0,0 +1,141 @@
+//ProjectEulerTS/Problems/Problem26.ts
+//Matthew Ellison
+// Created: 05-24-21
+//Modified: 05-24-21
+//Find the product of the coefficients, |a| < 1000 and |b| <= 1000, for the quadratic expression that produces the maximum number of primes for consecutive values of n, starting with n=0.
+//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/typescriptClasses
+/*
+	Copyright (C) 2021  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+
+import { isPrime } from "../../../Typescript/typescriptClasses/Algorithms";
+import { Unsolved } from "../Unsolved";
+import { Problem } from "./Problem";
+
+
+export class Problem27 extends Problem{
+	//Variables
+	//Static variables
+	private static LARGEST_POSSIBLE_A: number = 999;
+	private static LARGEST_POSSIBLE_B: number = 1000;
+	//Instance variables
+	private topA: number;	//The A for the most n's generated
+	private topB: number;	//The B for the most n's generated
+	private topN: number;	//The most n's generated
+
+	//Functions
+	//Constructor
+	public constructor(){
+		super(`Find the product of the coefficients, |a| <= ${Problem27.LARGEST_POSSIBLE_A} and |b| <= ${Problem27.LARGEST_POSSIBLE_B}, for the quadratic expression that produces the maximum number of primes for consecutive values of n, starting with n=0`);
+		this.topA = 0;
+		this.topB = 0;
+		this.topN = 0;
+	}
+	//Operational functions
+	//Solve the problem
+	public solve(): void{
+		//If the problem has already been solved do nothing and end the function
+		if(this.solved){
+			return;
+		}
+
+		//Start the timer
+		this.timer.start();
+
+		//Start with the lowest possible A and check all possibilities after that
+		for(let a: number = -Problem27.LARGEST_POSSIBLE_A; a <= Problem27.LARGEST_POSSIBLE_A;++a){
+			//Start witht he lowest possible B and check all possibilities after that
+			for(let b: number = -Problem27.LARGEST_POSSIBLE_B;b <= Problem27.LARGEST_POSSIBLE_B;++b){
+				//Start with n=0 and check the formula to see how many primes you can get the concecutive n's
+				let n: number = 0;
+				let quadratic: number = (n * n) + (a * n) + b;
+				while(isPrime(quadratic)){
+					++n;
+					quadratic = (n * n) + (a * n) + b;
+				}
+				--n;	//Negate an n because the last formula failed
+
+				//Set all the largest number if this created more primes than any other
+				if(n > this.topN){
+					this.topN = n;
+					this.topB = b;
+					this.topA = a;
+				}
+			}
+		}
+
+		//Stop the timer
+		this.timer.stop();
+
+		//Throw a flag to show the problem solved
+		this.solved = true;
+	}
+	//Reset the problem so it can be run again
+	public reset(): void{
+		super.reset();
+		this.topA = 0;
+		this.topB = 0;
+		this.topN = 0;
+	}
+	//Gets
+	//Returns the result of solving the problem
+	public getResult(): string{
+		if(!this.solved){
+			throw new Unsolved();
+		}
+		return `The greatest number of primes found is ${this.topN}\nIt was found with A = ${this.topA}, B = ${this.topB}\nThe product of A and B is ${this.getProduct()}`;
+	}
+	//Returns the top A that was generated
+	public getTopA(): number{
+		//If the problem hasn't been solved throw an exception
+		if(!this.solved){
+			throw new Unsolved();
+		}
+		return this.topA;
+	}
+	//Returns the top B that was generated
+	public getTopB(): number{
+		//If the problem hasn't been solved throw an exception
+		if(!this.solved){
+			throw new Unsolved();
+		}
+		return this.topB;
+	}
+	//Returns the top N that was generated
+	public getTopN(): number{
+		//If the problem hasn't been solved throw an exception
+		if(!this.solved){
+			throw new Unsolved();
+		}
+		return this.topN;
+	}
+	//Returns the product of A and B for the answer
+	public getProduct(): number{
+		//If the problem hasn't been solved throw an exception
+		if(!this.solved){
+			throw new Unsolved();
+		}
+		return this.topA * this.topB;
+	}
+}
+
+/* Results:
+The greatest number of primes found is 70
+It was found with A = -61, B = 971
+The product of A and B is -59231
+It took an average of 50.251 milliseconds to run this problem through 100 iterations
+*/