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December 5, 2017 06:15
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Advent of Code 2017 Day 5
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package Advent2017; | |
import util.FileIO; | |
import java.util.List; | |
public class Day5 { | |
private static int part1(int[] nums) { | |
int current = 0; | |
int steps = 0; | |
while (current < nums.length && current >= 0) { | |
int jump = nums[current]++; | |
current += jump; | |
steps++; | |
} | |
return steps; | |
} | |
private static int part2(int[] nums) { | |
int current = 0; | |
int steps = 0; | |
while (current < nums.length && current >= 0) { | |
int jump = nums[current]; | |
if (jump >= 3) { | |
nums[current]--; | |
} else { | |
nums[current]++; | |
} | |
current += jump; | |
steps++; | |
} | |
return steps; | |
} | |
public static void main(String[] args) { | |
List<String> input = FileIO.getAOCInputForDay(2017, 5, FileIO.SESSION_ID); | |
Timer.startTimer(); | |
int[] nums = input.stream() | |
.mapToInt(Integer::parseInt) | |
.toArray(); | |
System.out.println("Part 1: " + part1(nums.clone())); | |
System.out.println("Part 2: " + part2(nums)); | |
System.out.println(Timer.endTimer()); | |
} | |
} |
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