Square Root Without InBuilt Functions Example Java Program
Definition
A square root of a number a is a number y such that y2 = a, in other words, a number y whose square (the result of multiplying the number by itself, or y * y) is a. For example, 4 and ?4 are square roots of 16 because 4^2 = (?4)^2 = 16.Square Root Without InBuilt Functions Example Program
import java.util.Scanner; public class SquareRootWithoutInBuilt{ public static void main(String[] args){ Scanner in=new Scanner(System.in); System.out.print("Enter the number for which Square root is to be found: "); double num =in.nextInt(); squareRootMethod(num); } public static void squareRootMethod(double num){ boolean checkpos = true; double numm; if(num==0){ System.out.println("Square root of "+num+" = "+0); } else if(num<0){ num=-num; checkpos = false; } double squareRoot = num/2; do{ numm=squareRoot; squareRoot = (numm + (num/numm))/2; }while((numm-squareRoot)!=0); if(checkpos){ System.out.println("Square roots of "+num+" are "); System.out.println("+"+squareRoot); System.out.println("-"+squareRoot); } else{ System.out.println("Square roots of -"+num+" are "); System.out.println("+"+squareRoot+" i"); System.out.println("-"+squareRoot+" i"); } } }
Sample Output
output is Enter the number for which Square root is to be found: 2 Square roots of 2.0 are +1.414213562373095 -1.414213562373095
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