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refactor: simplify HammingDistance (#4218)

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* refactor: make HammingDistance an utility class

* tests: add some tests, simplify logic of some

* refator: simplify logic in HammingDistance

* style: remove logging messages
This commit is contained in:
Piotr Idzik
2023-06-21 17:41:13 +02:00
committed by GitHub
parent 7a3273ae1d
commit 63739f4933
2 changed files with 54 additions and 38 deletions
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35
src/main/java/com/thealgorithms/others/cn/HammingDistance.java
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@ -3,32 +3,33 @@ package com.thealgorithms.others.cn;
import java.util.ArrayList;
import java.util.List;
public class HammingDistance {
final public class HammingDistance {
private HammingDistance() {
}
public int getHammingDistanceBetweenBits(String senderBits, String receiverBits) {
if (senderBits.length() != receiverBits.length()) {
throw new IllegalArgumentException("Sender and Receiver bits should be same");
private static void checkChar(char inChar) {
if (inChar != '0' && inChar != '1') {
throw new IllegalArgumentException("Input must be a binary string.");
}
}
List<byte[]> byteArray = new ArrayList<>();
public static int compute(char charA, char charB) {
checkChar(charA);
checkChar(charB);
return charA == charB ? 0 : 1;
}
byteArray.add(senderBits.getBytes());
byteArray.add(receiverBits.getBytes());
byte[] senderData = byteArray.get(0);
byte[] receiverData = byteArray.get(1);
public static int compute(String bitsStrA, String bitsStrB) {
if (bitsStrA.length() != bitsStrB.length()) {
throw new IllegalArgumentException("Input strings must have the same length.");
}
int totalErrorBitCount = 0;
for (int i = 0; i < senderData.length; i++) {
totalErrorBitCount += senderData[i] ^ receiverData[i];
for (int i = 0; i < bitsStrA.length(); i++) {
totalErrorBitCount += compute(bitsStrA.charAt(i), bitsStrB.charAt(i));
}
if (totalErrorBitCount == 0) {
System.out.println("No Error bit in data segments");
} else {
System.out.println("Total Error bit count " + totalErrorBitCount);
}
return totalErrorBitCount;
}
}