alazyreader/AdventOfCode2025
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use switch assignment

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This commit is contained in:
David
2025-12-01 21:11:04 -05:00
parent a06dacfbae
commit 1546b2cdeb
1 changed files with 14 additions and 24 deletions
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32
src/Day01.java
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@@ -16,14 +16,11 @@ public class Day01 {
while (scanner.hasNextLine()) { while (scanner.hasNextLine()) {
String instruction = scanner.nextLine(); String instruction = scanner.nextLine();
int change = Integer.parseInt(instruction.substring(1)); int change = Integer.parseInt(instruction.substring(1));
switch (instruction.charAt(0)) { dial = switch (instruction.charAt(0)) {
case 'L' -> { case 'L' -> (dial - change + 100) % 100;
dial = (dial - change + 100) % 100; case 'R' -> (dial + change) % 100;
} default -> dial; // impossible
case 'R' -> { };
dial = (dial + change) % 100;
}
}
if (dial == 0) { if (dial == 0) {
password += 1; password += 1;
} }
@@ -42,25 +39,18 @@ public class Day01 {
while (scanner.hasNextLine()) { while (scanner.hasNextLine()) {
String instruction = scanner.nextLine(); String instruction = scanner.nextLine();
int change = Integer.parseInt(instruction.substring(1)); int change = Integer.parseInt(instruction.substring(1));
switch (instruction.charAt(0)) { int step = switch (instruction.charAt(0)) {
case 'L' -> { case 'L' -> -1;
case 'R' -> 1;
default -> 0; // impossible
};
for (int i = 0; i < change; i++) { for (int i = 0; i < change; i++) {
dial = (dial - 1) % 100; dial = (dial + step) % 100;
if (dial == 0) { if (dial == 0) {
password += 1; password += 1;
} }
} }
} }
case 'R' -> {
for (int i = 0; i < change; i++) {
dial = (dial + 1) % 100;
if (dial == 0) {
password += 1;
}
}
}
}
}
System.out.println(password); System.out.println(password);
} catch (Exception e) { } catch (Exception e) {
System.out.println(e.getMessage()); System.out.println(e.getMessage());