11package com .sbaars .adventofcode .year15 .days ;
22
33import com .sbaars .adventofcode .year15 .Day2015 ;
4+ import java .util .stream .Stream ;
5+ import com .sbaars .adventofcode .network .Submit ;
46
57public class Day8 extends Day2015 {
68
@@ -9,16 +11,56 @@ public Day8() {
911 }
1012
1113 public static void main (String [] args ) {
12- new Day8 ().printParts ();
14+ Day8 day = new Day8 ();
15+ day .printParts ();
16+ Submit submit = new Submit ();
17+ submit .submit (day .part1 (), 2015 , 8 , 1 );
18+ submit .submit (day .part2 (), 2015 , 8 , 2 );
1319 }
1420
1521 @ Override
1622 public Object part1 () {
17- return "" ;
23+ return dayStream (). mapToInt ( s -> s . length () - countMemoryChars ( s )). sum () ;
1824 }
1925
2026 @ Override
2127 public Object part2 () {
22- return "" ;
28+ return dayStream ().mapToInt (s -> countEncodedChars (s ) - s .length ()).sum ();
29+ }
30+ 31+ private int countMemoryChars (String s ) {
32+ // Remove quotes at start and end
33+ String content = s .substring (1 , s .length () - 1 );
34+ int count = 0 ;
35+ for (int i = 0 ; i < content .length (); i ++) {
36+ if (content .charAt (i ) == '\\' ) {
37+ if (i + 1 < content .length ()) {
38+ char next = content .charAt (i + 1 );
39+ if (next == '\\' || next == '"' ) {
40+ i ++; // Skip the escaped character
41+ } else if (next == 'x' && i + 3 < content .length ()) {
42+ i += 3 ; // Skip the hex sequence
43+ }
44+ }
45+ }
46+ count ++;
47+ }
48+ return count ;
49+ }
50+ 51+ private int countEncodedChars (String s ) {
52+ int count = 2 ; // Opening and closing quotes
53+ for (char c : s .toCharArray ()) {
54+ if (c == '"' || c == '\\' ) {
55+ count += 2 ; // Each quote or backslash needs to be escaped
56+ } else {
57+ count ++; // Regular character
58+ }
59+ }
60+ return count ;
61+ }
62+ 63+ protected Stream <String > dayStream () {
64+ return day ().lines ();
2365 }
2466}
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