66 lines
1.9 KiB
Java
66 lines
1.9 KiB
Java
import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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/**
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*
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* @author Varun Upadhyay (https://github.com/varunu28)
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*
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*/
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// Driver Program
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public class DecimalToAnyBase {
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public static void main (String[] args) throws Exception{
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BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
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System.out.println("Enter the decimal input below: ");
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int decInput = Integer.parseInt(br.readLine());
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System.out.println();
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System.out.println("Enter the base below: ");
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int base = Integer.parseInt(br.readLine());
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System.out.println();
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System.out.println("Decimal Input" + " is: " + decInput);
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System.out.println("Value of " + decInput + " in base " + base + " is: " + convertToAnyBase(decInput, base));
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br.close();
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}
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/**
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* This method produces a String value of any given input decimal in any base
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* @param inp Decimal of which we need the value in base in String format
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* @return string format of the converted value in the given base
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*/
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public static String convertToAnyBase(int inp, int base) {
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ArrayList<Character> charArr = new ArrayList<>();
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while (inp > 0) {
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charArr.add(reVal(inp%base));
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inp /= base;
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}
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StringBuilder str = new StringBuilder(charArr.size());
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for(Character ch: charArr)
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{
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str.append(ch);
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}
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return str.reverse().toString();
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}
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/**
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* This method produces character value of the input integer and returns it
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* @param num integer of which we need the character value of
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* @return character value of input integer
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*/
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public static char reVal(int num) {
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if (num >= 0 && num <= 9)
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return (char)(num + '0');
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else
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return (char)(num - 10 + 'A');
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}
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}
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