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part1.java
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part1.java
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package com.company;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) throws FileNotFoundException {
File source = new File("input.txt");
ArrayList<String> input = new ArrayList<>();
Scanner reader = null;
int lineLength = 0;
try {
reader = new Scanner(source);
while (reader.hasNextLine()) {
String line = reader.nextLine();
lineLength = line.length();
input.add(line);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
String gammaRate = "";
String epsilon = "";
int zeroBits = 0;
int oneBits = 0;
for (int i = 0; i < lineLength; i++) {
for (int j = 0; j < input.size(); j++) {
String line = input.get(j);
if (line.charAt(i) == '1') {
oneBits++;
} else {
zeroBits++;
}
if (j == input.size() - 1) {
if (oneBits > zeroBits) {
gammaRate = gammaRate + "1";
epsilon = epsilon + "0";
} else {
gammaRate = gammaRate + "0";
epsilon = epsilon + "1";
}
zeroBits = 0;
oneBits = 0;
}
}
}
int gammaRateResult = Integer.parseInt(gammaRate,2);
int epsilonResult = Integer.parseInt(epsilon,2);
System.out.println(gammaRateResult * epsilonResult);
}
}