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Merge pull request #127 from dpacmen/patch-2

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add precision_root_algorithm
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Chetan Kaushik
2017-10-03 14:48:57 +05:30
committed by GitHub
parent 4d6e69dec6 32d03516fe
commit d1475f1c5b
1 changed files with 33 additions and 0 deletions
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Misc/root_precision.java Normal file
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import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
public class Solution {
public static void main(String[] args) {
//take input
Scanner scn = new Scanner(System.in);
int N = scn.nextInt(); //N is the input number
int P = scn.nextInt(); //P is precision value for eg - P is 3 in 2.564 and 5 in 3.80870.
System.out.println(squareRoot(N, P));
}
public static double squareRoot(int N, int P) {
double rv = 0; //rv means return value
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 (double)rv/precision;
}
}