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DecimalToHexadecimal.java
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package com.thealgorithms.conversions;
/**
* This class provides a method to convert a decimal number to a hexadecimal string.
*/
final class DecimalToHexadecimal {
private static final int SIZE_OF_INT_IN_HALF_BYTES = 8;
private static final int NUMBER_OF_BITS_IN_HALF_BYTE = 4;
private static final int HALF_BYTE_MASK = 0x0F;
private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
private DecimalToHexadecimal() {
}
/**
* Converts a decimal number to a hexadecimal string.
* @param decimal the decimal number to convert
* @return the hexadecimal representation of the decimal number
*/
public static String decToHex(int decimal) {
StringBuilder hexBuilder = new StringBuilder(SIZE_OF_INT_IN_HALF_BYTES);
for (int i = SIZE_OF_INT_IN_HALF_BYTES - 1; i >= 0; --i) {
int currentHalfByte = decimal & HALF_BYTE_MASK;
hexBuilder.insert(0, HEX_DIGITS[currentHalfByte]);
decimal >>= NUMBER_OF_BITS_IN_HALF_BYTE;
}
return hexBuilder.toString().toLowerCase();
}
}