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82
Conversions/BinaryToHexadecimal.java
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@ -9,47 +9,47 @@ import java.util.*;
*/
public class BinaryToHexadecimal {
/**
* This method converts a binary number to
* a hexadecimal number.
*
* @param binary The binary number
* @return The hexadecimal number
*/
static String binToHex(int binary) {
//hm to store hexadecimal codes for binary numbers within the range: 0000 to 1111 i.e. for decimal numbers 0 to 15
HashMap<Integer, String> hm = new HashMap<>();
//String to store hexadecimal code
String hex = "";
int i;
for (i = 0; i < 10; i++) {
hm.put(i, String.valueOf(i));
}
for (i = 10; i < 16; i++) hm.put(i, String.valueOf((char) ('A' + i - 10)));
int currbit;
while (binary != 0) {
int code4 = 0; //to store decimal equivalent of number formed by 4 decimal digits
for (i = 0; i < 4; i++) {
currbit = binary % 10;
binary = binary / 10;
code4 += currbit * Math.pow(2, i);
}
hex = hm.get(code4) + hex;
}
return hex;
/**
* This method converts a binary number to a hexadecimal number.
*
* @param binary The binary number
* @return The hexadecimal number
*/
static String binToHex(int binary) {
// hm to store hexadecimal codes for binary numbers within the range: 0000 to 1111 i.e. for
// decimal numbers 0 to 15
HashMap<Integer, String> hm = new HashMap<>();
// String to store hexadecimal code
String hex = "";
int i;
for (i = 0; i < 10; i++) {
hm.put(i, String.valueOf(i));
}
for (i = 10; i < 16; i++) hm.put(i, String.valueOf((char) ('A' + i - 10)));
int currbit;
while (binary != 0) {
int code4 = 0; // to store decimal equivalent of number formed by 4 decimal digits
for (i = 0; i < 4; i++) {
currbit = binary % 10;
binary = binary / 10;
code4 += currbit * Math.pow(2, i);
}
hex = hm.get(code4) + hex;
}
return hex;
}
/**
* Main method
*
* @param args Command line arguments
*/
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter binary number:");
int binary = sc.nextInt();
String hex = binToHex(binary);
System.out.println("Hexadecimal Code:" + hex);
sc.close();
}
/**
* Main method
*
* @param args Command line arguments
*/
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter binary number:");
int binary = sc.nextInt();
String hex = binToHex(binary);
System.out.println("Hexadecimal Code:" + hex);
sc.close();
}
}