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15 changes: 9 additions & 6 deletions task01/src/com/example/task01/Task01Main.java
Original file line number Diff line number Diff line change
Expand Up @@ -2,20 +2,23 @@

import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayInputStream;

public class Task01Main {
public static void main(String[] args) throws IOException {
//здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
// например вот так:

/*
System.out.println(checkSumOfStream(new ByteArrayInputStream(new byte[]{0x33, 0x45, 0x01})));
*/


}

public static int checkSumOfStream(InputStream inputStream) throws IOException {
// your implementation here
return 0;
if (inputStream == null) throw new IllegalArgumentException();
int checkSum = 0;
int currentByte;
while ((currentByte = inputStream.read()) != -1) {
checkSum = Integer.rotateLeft(checkSum, 1) ^ currentByte;
}
return checkSum;
}
}
25 changes: 25 additions & 0 deletions task02/src/com/example/task02/Task02Main.java
Original file line number Diff line number Diff line change
Expand Up @@ -9,5 +9,30 @@ public static void main(String[] args) throws IOException {
// - направить стандартный вывод программы в файл output.test
// - запустить программу
// - и сравнить получившийся файл output.test с expected.test
int prevByte = -1;
int currentByte;

while ((currentByte = System.in.read()) != -1) {
if (prevByte == 13) {
if (currentByte == 10) {
System.out.write(10);
prevByte = -1;
} else {
System.out.write(prevByte);
prevByte = currentByte;
}
} else {
if (prevByte != -1) {
System.out.write(prevByte);
}
prevByte = currentByte;
}
}

if (prevByte != -1) {
System.out.write(prevByte);
}

System.out.flush();
}
}
15 changes: 13 additions & 2 deletions task03/src/com/example/task03/Task03Main.java
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,18 @@ public static void main(String[] args) throws IOException {
}

public static String readAsString(InputStream inputStream, Charset charset) throws IOException {
// your implementation here
return "";
if (inputStream == null) {
throw new IllegalArgumentException("InputStream cannot be null");
}

byte[] buffer = new byte[1024];
StringBuilder stringBuilder = new StringBuilder();
int bytesRead;

while ((bytesRead = inputStream.read(buffer)) != -1) {
stringBuilder.append(new String(buffer, 0, bytesRead, charset));
}

return stringBuilder.toString();
}
}
21 changes: 15 additions & 6 deletions task04/src/com/example/task04/Task04Main.java
Original file line number Diff line number Diff line change
@@ -1,14 +1,23 @@
package com.example.task04;

import java.util.Scanner;
import java.util.Locale;
import java.io.IOException;

public class Task04Main {
public static void main(String[] args) throws IOException {
// чтобы протестировать свое решение, вам нужно:
// - направить файл input.test в стандартный ввод программы (в настройках запуска программы в IDE или в консоли)
// - запустить программу
// - проверить, что получилось 351.731900
Scanner scanner = new Scanner(System.in);
double sum = 0.0;

while (scanner.hasNext()) {
String token = scanner.next();
try {
double number = Double.parseDouble(token);
sum += number;
} catch (NumberFormatException e) {

}
}

System.out.println("0.0");
System.out.printf(Locale.US, "%.6f%n", sum);
}
}