More convenient folder name

projects/aoc/src/Main.hx

@@ -0,0 +1,9 @@
+package;
+
+import kiss.Kiss;
+import kiss.Prelude;
+import kiss.List;
+import year2020.Solutions as Solutions2020;
+
+@:build(kiss.Kiss.build("src/Main.kiss"))
+class Main {}

projects/aoc/src/Main.kiss

@@ -0,0 +1,2 @@
+(defun main []
+    (Solutions2020.main))

projects/aoc/src/year2020/Passports.hx

@@ -0,0 +1,9 @@
+package year2020;
+
+import kiss.Prelude;
+import kiss.Stream;
+
+using StringTools;
+
+@:build(kiss.Kiss.build("src/year2020/Passports.kiss"))
+class Passports {}

projects/aoc/src/year2020/Passports.kiss

@@ -0,0 +1,39 @@
+(defun readPassport [:Stream stream &opt :Map<String,String> pp]
+    (set pp (or pp (new Map<String,String>)))
+    (when (stream.isEmpty) (return pp))
+    (let [key (stream.expect "passport key" (lambda [] (stream.takeUntilAndDrop ":")))
+                value (stream.expect "passport value" (lambda [] (stream.takeUntilOneOf [" " #|"\n"|#])))]
+        (dict-set pp key value))
+    (if (= #|"\n\n"|# (try (stream.expect "paragraph break" (lambda [] (stream.peekChars 2))) (catch [e] "")))
+            (begin (stream.dropWhitespace) pp)
+        (begin (stream.dropWhitespace) (readPassport stream pp))))
+
+(defun checkPassport [:Map<String,String> pp strict]
+    (doFor key ["byr" "iyr" "eyr" "hgt" "hcl" "ecl" "pid"]
+        (if !(pp.exists key) (return false)))
+    (when strict
+        (unless (<= 1920 (Std.parseInt (dict-get pp "byr")) 2002) (return false))
+        (unless (<= 2010 (Std.parseInt (dict-get pp "iyr")) 2020) (return false))
+        (unless (<= 2020 (Std.parseInt (dict-get pp "eyr")) 2030) (return false))
+        (let [hgt (dict-get pp "hgt")
+                    [min max] (cond ((hgt.endsWith "cm") [150 193]) ((hgt.endsWith "in") [59 76]) (true (return false)))]
+            (unless (<= min (Std.parseInt hgt) max) (return false)))
+        (let [hcl (dict-get pp "hcl")]
+            (unless (and 
+                        (hcl.startsWith "#")
+                        (= hcl.length 7)
+                        (apply = (.concat [true] 
+                            (for c (.split (hcl.substr 1) "")
+                                (<= 0 (.indexOf (.split "0123456789abcdef" "") c))))))
+                (return false)))
+        (let [ecl (dict-get pp "ecl")]
+            (unless (<= 0 (.indexOf (.split "amb blu brn gry grn hzl oth" " ") ecl)) (return false)))
+        (let [pid (dict-get pp "pid")]
+            (unless (and (= 9 pid.length) (Std.parseInt pid)) (return false))))
+    (return true))
+
+(defun countValidPassports [:Stream stream &opt strict c]
+    (unless c (set c 0))
+    (if (stream.isEmpty)
+            c
+        (countValidPassports stream strict (if (checkPassport (readPassport stream) strict) (+ c 1) c))))

projects/aoc/src/year2020/Passwords.hx

@@ -0,0 +1,10 @@
+package year2020;
+
+import kiss.Prelude;
+import kiss.Operand;
+import year2020.Util;
+
+using StringTools;
+
+@:build(kiss.Kiss.build("src/year2020/Passwords.kiss"))
+class Passwords {}

projects/aoc/src/year2020/Passwords.kiss

@@ -0,0 +1,17 @@
+
+(defun parsePasswordCheck1 [:String ruleStr]
+    (let [[min max letter]
+                (.split (ruleStr.replace " " "-") "-")]
+        (lambda [password] (<= (Std.parseInt min) (Util.countChar letter password) (Std.parseInt max)))))
+
+(defun parsePasswordCheck2 [:String ruleStr]
+    (let [[a b letter]
+                (.split (ruleStr.replace " " "-") "-")
+            aIdx (- (Std.parseInt a) 1)
+            bIdx (- (Std.parseInt b) 1)]
+        (lambda [password] (= 1 (Util.countChar letter (+ (.charAt password aIdx) (.charAt password bIdx)))))))
+
+(defun validateInputLine [:String line ruleParser]
+    (let [[rule password]
+                (line.split ": ")]
+        ((ruleParser rule) password)))

projects/aoc/src/year2020/Solutions.hx

@@ -0,0 +1,14 @@
+package year2020;
+
+import haxe.ds.Map;
+import StringTools;
+import kiss.Prelude;
+import kiss.Stream;
+import year2020.Util;
+import year2020.SummingTuples;
+import year2020.Passwords;
+import year2020.Toboggan;
+import year2020.Passports;
+
+@:build(kiss.Kiss.build("src/year2020/Solutions.kiss"))
+class Solutions {}

projects/aoc/src/year2020/Solutions.kiss

@@ -0,0 +1,49 @@
+(defun main []
+    // Day 1
+    (let [p (SummingTuples.pairWithSum 2020 [1721 979 366 299 675 1456])]
+        (assert (and (has p 1721) (has p 299)) "pairWithSum is broken"))
+    (let [[a b] (SummingTuples.pairWithSum 2020 (Util.readInts "src/year2020/inputs/day1-1.txt"))]
+        (assert (= 545379 (* a b)) "pairWithSum is broken"))
+    (let [t (SummingTuples.trioWithSum 2020 [1721 979 366 299 675 1456])]
+        (assert (and (has t 675) (has t 366) (has t 979))
+            "trioWithSum is broken"))
+    (let [[a b c] (SummingTuples.trioWithSum 2020 (Util.readInts "src/year2020/inputs/day1-1.txt"))]
+        (assert (= 257778836 (* a b c))
+            "trioWithSum is broken"))
+            
+    // Day 2
+    (assert (Passwords.validateInputLine "1-3 a: abcde" Passwords.parsePasswordCheck1))
+    (assert !(Passwords.validateInputLine "1-3 b: cdefg" Passwords.parsePasswordCheck1))
+    (assert (Passwords.validateInputLine "2-9 c: ccccccccc" Passwords.parsePasswordCheck1))
+    (assert (= 655 (count (map (Util.readLines "src/year2020/inputs/day2-1.txt") (.bind Passwords.validateInputLine _ Passwords.parsePasswordCheck1)) (lambda [v] v))))
+    (assert (Passwords.validateInputLine "1-3 a: abcde" Passwords.parsePasswordCheck2))
+    (assert !(Passwords.validateInputLine "1-3 b: cdefg" Passwords.parsePasswordCheck2))
+    (assert !(Passwords.validateInputLine "2-9 c: ccccccccc" Passwords.parsePasswordCheck2))
+    (assert (= 673 (count (map (Util.readLines "src/year2020/inputs/day2-1.txt") (.bind Passwords.validateInputLine _ Passwords.parsePasswordCheck2)) (lambda [v] v))))
+        
+    // Day 3
+    (deflocal exampleHillTile [
+                                    "..##......."                                    
+                                    "#...#...#.."
+                                    ".#....#..#."
+                                    "..#.#...#.#"
+                                    ".#...##..#."
+                                    "..#.##....."
+                                    ".#.#.#....#"
+                                    ".#........#"
+                                    "#.##...#..."
+                                    "#...##....#"
+                                    ".#..#...#.#"])
+    (assert (= "..#.##.####" (Toboggan.pathString exampleHillTile 0 0 3 1)))
+    (assert (= 2 (Toboggan.pathTrees exampleHillTile 0 0 1 1)))
+    (assert (= 3 (Toboggan.pathTrees exampleHillTile 0 0 5 1)))
+    (assert (= 4 (Toboggan.pathTrees exampleHillTile 0 0 7 1)))
+    (assert (= 2 (Toboggan.pathTrees exampleHillTile 0 0 1 2)))
+    (assert (= 289 (Util.countChar "#" (Toboggan.pathString (Util.readLines "src/year2020/inputs/day3-1.txt") 0 0 3 1))))
+    (assert (= 5522401584 (let [hillTile (Util.readLines "src/year2020/inputs/day3-1.txt")]
+            (apply * (for args [[0 0 1 1] [0 0 3 1] [0 0 5 1] [0 0 7 1] [0 0 1 2]] (apply (Toboggan.pathTrees.bind hillTile) args))))))
+    
+    // Day 4
+    (assert (= 2 (Passports.countValidPassports (new Stream "src/year2020/inputs/day4-example.txt"))))
+    (assert (= 250 (Passports.countValidPassports (new Stream "src/year2020/inputs/day4-1.txt"))))
+    (assert (= 158 (Passports.countValidPassports (new Stream "src/year2020/inputs/day4-1.txt") "strict"))))

projects/aoc/src/year2020/SummingTuples.hx

@@ -0,0 +1,6 @@
+package year2020;
+
+import kiss.Prelude;
+
+@:build(kiss.Kiss.build("src/year2020/SummingTuples.kiss"))
+class SummingTuples {}

projects/aoc/src/year2020/SummingTuples.kiss

@@ -0,0 +1,17 @@
+(defun :kiss.List<Int> pairWithSum [sum :kiss.List<Int> numbers]
+    // Put the numbers in a map for random access. This gives an O(n) solution
+    (deflocal :Map<Int,Int> numbersMap (new Map))
+    (doFor number numbers
+        (dict-set numbersMap number (- sum number))
+        (let [requiredForPair (dict-get numbersMap number)]
+            (when (numbersMap.exists requiredForPair)
+                (return [number requiredForPair]))))
+    null)
+
+(defun :kiss.List<Int> trioWithSum [sum :kiss.List<Int> numbers]
+    (doFor number numbers
+        (let [requiredForTrio (- sum number)
+                pairThatSatisfies (pairWithSum requiredForTrio numbers)]
+            (when pairThatSatisfies
+                (return [number (nth pairThatSatisfies 0) (nth pairThatSatisfies 1)]))))
+    null)

projects/aoc/src/year2020/Toboggan.hx

@@ -0,0 +1,7 @@
+package year2020;
+
+import kiss.Prelude;
+import year2020.Util;
+
+@:build(kiss.Kiss.build("src/year2020/Toboggan.kiss"))
+class Toboggan {}

projects/aoc/src/year2020/Toboggan.kiss

@@ -0,0 +1,8 @@
+(defun path [:kiss.List<String> hillTile x0 y0 dx dy]
+    (if (>= y0 .length hillTile)
+            []
+        (.concat [(.charAt (nth hillTile y0) (Math.floor (% x0 .length (nth hillTile y0))))] (path hillTile (+ x0 dx) (+ y0 dy) dx dy))))
+
+(defun pathString [:kiss.List<String> hillTile x0 y0 dx dy] (.join (path hillTile x0 y0 dx dy) ""))
+
+(defun pathTrees [:kiss.List<String> hillTile x0 y0 dx dy] (Util.countChar "#" (pathString hillTile x0 y0 dx dy)))

projects/aoc/src/year2020/Util.hx

@@ -0,0 +1,9 @@
+package year2020;
+
+import sys.io.File;
+import kiss.Prelude;
+
+using StringTools;
+
+@:build(kiss.Kiss.build("src/year2020/Util.kiss"))
+class Util {}

projects/aoc/src/year2020/Util.kiss

@@ -0,0 +1,12 @@
+(defun readLines [file]
+    (.filter
+        (.map
+            // TODO implement escape sequences in kiss string literals
+            (.split (.replace (File.getContent file) #|"\r"|# "") #|"\n"|#)
+            StringTools.trim)
+        (lambda [l] (< 0 l.length))))
+
+(defun readInts [file] (let [lines (readLines file)] (lines.map Std.parseInt)))
+
+(defun countChar [char str]
+    (count (str.split "") (lambda [c] ?(= c char))))

projects/aoc/src/year2020/inputs/day1-1.txt

@@ -0,0 +1,200 @@
+1825
+1944
+1802
+1676
+1921
+1652
+1710
+1952
+1932
+1934
+1823
+1732
+1795
+1681
+1706
+1697
+1919
+1695
+2007
+1889
+1942
+961
+1868
+1878
+1723
+416
+1875
+1831
+1890
+1654
+1956
+1827
+973
+1947
+1688
+1680
+1808
+1998
+1794
+1552
+1935
+1693
+1824
+1711
+1766
+1668
+1968
+1884
+217
+2003
+1869
+1658
+1953
+1829
+1984
+2005
+1973
+428
+1957
+1925
+1719
+1797
+321
+1804
+1971
+922
+1976
+1863
+2008
+1806
+1833
+1809
+1707
+1954
+1811
+1815
+1915
+1799
+1917
+1664
+1937
+1775
+1685
+1756
+1940
+1660
+1859
+1916
+1989
+1763
+1994
+1716
+1689
+1866
+1708
+1670
+1982
+1870
+1847
+1627
+1819
+1786
+1828
+1640
+1699
+1722
+1737
+1882
+1666
+1871
+1703
+1770
+1623
+1837
+1636
+1655
+1930
+1739
+1810
+1805
+1861
+1922
+1993
+1896
+1760
+2002
+1779
+1633
+1972
+1856
+1641
+1718
+2004
+1730
+1826
+1923
+1753
+1735
+660
+1988
+1796
+1990
+1720
+1626
+1788
+1700
+942
+1902
+1943
+1758
+1839
+1924
+938
+1634
+1724
+1983
+1683
+1687
+1904
+1907
+1757
+2001
+1910
+1849
+1781
+1981
+1743
+1851
+2009
+619
+1898
+1891
+1751
+1765
+1959
+1888
+1894
+1759
+389
+1964
+1900
+1742
+1672
+1969
+1978
+1933
+1906
+1807
+1867
+1838
+1960
+1814
+1950
+1918
+1726
+1986
+1746
+2006
+1949
+1784

projects/aoc/src/year2020/inputs/day3-1.txt

@@ -0,0 +1,323 @@
+.#..#.....#....##..............
+...#.#...#...#.#..........#....
+#...###...#.#.....#.##.#.#...#.
+#.....#.#...##....#...#...#....
+##.......##.#.....#........##.#
+#..#....#......#..#......#...#.
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+..#.###..#..............#......
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+........#.........#....#....###
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+#.#..#.....#.#..#..#..#.#......
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projects/aoc/src/year2020/inputs/day4-example.txt

@@ -0,0 +1,13 @@
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+iyr:2013 ecl:amb cid:350 eyr:2023 pid:028048884
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+hcl:#cfa07d eyr:2025 pid:166559648
+iyr:2011 ecl:brn hgt:59in