JavaAlgorithms/Others/RootPrecision.java
yanglbme 29948363da docs: update the whole repository
* fix some bugs
* delete duplicate files
* format code
2019-05-09 19:32:54 +08:00

34 lines
927 B
Java

package Others;
import java.util.Scanner;
public class RootPrecision {
public static void main(String[] args) {
// take input
Scanner scn = new Scanner(System.in);
// N is the input number
int N = scn.nextInt();
// P is precision value for eg - P is 3 in 2.564 and 5 in 3.80870.
int P = scn.nextInt();
System.out.println(squareRoot(N, P));
}
public static double squareRoot(int N, int P) {
// rv means return value
double rv;
double root = Math.pow(N, 0.5);
// calculate precision to power of 10 and then multiply it with root value.
int precision = (int) Math.pow(10, P);
root = root * precision;
/*typecast it into integer then divide by precision and again typecast into double
so as to have decimal points upto P precision */
rv = (int) root;
return rv / precision;
}
}