Initial commit, day 1 and 2

main
earnest ma 1 year ago
commit 2b04ab0cbe
  1. 20
      LICENSE
  2. 3
      README.md
  3. 2000
      day01-input.txt
  4. 50
      day01.java
  5. 66
      day01Part2.java
  6. 1000
      day02-input.txt
  7. 48
      day02.java
  8. 53
      day02Part2.java

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Copyright (c) 2021 earnest ma <me@earne.link>
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
Be Gay, Do Crimes
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# AOC 2021 personal solutions
It's my first year doing [Advent of Code](https://adventofcode.com) (and doing more coding), and I'm doing it in java :/ (because that's what I'm currently learning as part of the ICS4U course).

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// In around 20 minutes
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class day01 {
public static void main(String[] args) throws IOException {
int hasIncreasedCounter = 0;
int lineCounter = 1;
int firstnum = 0;
int nextnum = 0;
String line; // convert to int or something
BufferedReader in = new BufferedReader(new FileReader("day01-input.txt"));
line = in.readLine();
while (line != null) {
if (lineCounter == 1) { // first line, no firstnum, set
firstnum = Integer.valueOf(line).intValue();
System.out.println("First entry " + firstnum);
}
else { // continue, as usual
nextnum = Integer.valueOf(line).intValue();
System.out.println("Comparing " + firstnum + " and " + nextnum);
if (nextnum > firstnum) {
System.out.println("Yes!");
hasIncreasedCounter++;
}
else {
System.out.println("Not bigger");
}
firstnum = nextnum; // swap to continue
}
lineCounter++;
// continue
line = in.readLine();
}
in.close(); // bye
System.out.println("Final is " + hasIncreasedCounter);
}
}

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import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class day01Part2 {
public static void main(String[] args) throws IOException {
int hasIncreasedCounter = 0;
int lineCounter = 1;
int firstnum = 0;
int secondnum = 0;
int thirdnum = 0;
int oldsum = 0;
int newsum = 0;
String line; // convert to int or something
BufferedReader in = new BufferedReader(new FileReader("day01-input.txt"));
line = in.readLine();
while (line != null) {
if (lineCounter == 1) { // first lines in file
firstnum = Integer.valueOf(line).intValue();
}
else if (lineCounter == 2) {
secondnum = Integer.valueOf(line).intValue();
}
else if (lineCounter == 3) {
thirdnum = Integer.valueOf(line).intValue();
}
else {
oldsum = firstnum + secondnum + thirdnum;
// swapping done here
firstnum = secondnum;
secondnum = thirdnum;
// read new line as thirdnum
thirdnum = Integer.valueOf(line).intValue();
newsum = firstnum + secondnum + thirdnum;
System.out.println("Comparing " + oldsum + " and " + newsum);
if (newsum > oldsum) {
System.out.println("Yes!");
hasIncreasedCounter++;
}
else {
System.out.println("Not bigger");
}
// oldsum = newsum; // swap to continue
}
lineCounter++;
// continue
line = in.readLine();
}
in.close(); // bye
System.out.println("Final is " + hasIncreasedCounter);
}
}

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// so how do we parse this file?
// .split("regex here...")
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class day02 {
public static void main(String[] args) throws IOException {
int posHorizontal = 0;
int posDepth = 0;
int finalAns = 0; // posHorizontal * posDepth
String line;
String direction;
int movement;
BufferedReader in = new BufferedReader(new FileReader("day02-input.txt"));
line = in.readLine();
while (line != null) {
String[] lineProcess = line.split(" ");
direction = lineProcess[0];
movement = Integer.valueOf(lineProcess[1]).intValue();
if (direction.compareTo("forward") == 0) {
posHorizontal += movement;
}
else if (direction.compareTo("up") == 0) {
posDepth -= movement;
}
else if (direction.compareTo("down") == 0) {
posDepth += movement;
}
line = in.readLine();
}
in.close();
finalAns = posHorizontal * posDepth;
System.out.println(finalAns);
}
}

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import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class day02Part2 {
public static void main(String[] args) throws IOException {
int posHorizontal = 0;
int posDepth = 0;
int aim = 0;
int finalAns = 0; // posHorizontal * posDepth
String line;
String direction;
int movement;
BufferedReader in = new BufferedReader(new FileReader("day02-input.txt"));
line = in.readLine();
while (line != null) {
String[] lineProcess = line.split(" ");
direction = lineProcess[0];
movement = Integer.valueOf(lineProcess[1]).intValue();
if (direction.compareTo("forward") == 0) {
int temp = 0;
posHorizontal += movement;
temp = movement * aim;
posDepth += temp;
}
else if (direction.compareTo("up") == 0) {
// posDepth -= movement;
aim -= movement;
}
else if (direction.compareTo("down") == 0) {
// posDepth += movement;
aim += movement;
}
line = in.readLine();
}
in.close();
finalAns = posHorizontal * posDepth;
System.out.println(finalAns);
}
}
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