d6: python

2022/d4/flake.nix

@@ -15,6 +15,7 @@
         '';
         py_pkgs = [ pkgs.python310 ];
         lua_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.busted luapkgs.luafilesystem ])) ];
+        fennel_pkgs = [];
       in
       {
         # Jack of all trades

2022/d5/flake.nix

@@ -14,16 +14,16 @@
           echo "This problem shares one input between two parts"
         '';
         py_pkgs = [ pkgs.python310 ];
-        lua_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.busted luapkgs.luafilesystem ])) ];
+        # lua_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.busted luapkgs.luafilesystem ])) ];
-        fennel_pkgs = [ pkgs.lua.withPackages (luapkgs: [ luapkgs.fennel ]) ];
+        fennel_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.fennel luapkgs.readline ])) ];
       in
       {
         # Jack of all trades
         devShell = pkgs.mkShell {
           nativeBuildInputs = py_pkgs ++ fennel_pkgs;
           shellHook = ''
-            echo "> Default runtime. This contains both lua and python3 env"
+            echo "> Default runtime. This contains both fennel and python3 env"
-            echo "Run ./run-py.sh for Python's output and ./run-lua.sh for Lua's output"
+            echo "Run ./run-py.sh for Python's output and ./run-fnl.sh for Fennel's output"
           '' + shellHookAfter;
         };
         devShells = {
@@ -35,6 +35,17 @@
           #     echo "Run ./run-lua.sh to see the output of the solution"
           #   '' + shellHookAfter;
           # };
+
+          # nix develop ./#fennel
+          fennel = pkgs.mkShell
+            {
+              nativeBuildInputs = fennel_pkgs;
+              shellHook = ''
+                echo "> Fennel runtime"
+                echo "Run ./run-fnl.sh to see output of Fennel solution"
+              '' + shellHookAfter;
+            };
+
           # nix develop ./#python
           python = pkgs.mkShell {
             nativeBuildInputs = py_pkgs;

2022/d5/run-fnl.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env sh
+
+echo "example"
+fennel ./src/d5.fnl ./data/example.txt
+
+echo "submission"
+fennel ./src/d5.fnl ./data/submission.txt
+

2022/d5/src/d5.fnl

@@ -0,0 +1,57 @@
+(local fennel (require :fennel)) 
+
+(fn pp [x] 
+  (print (fennel.view x)))
+
+(fn get-crates-insns [fileloc]
+  (let [file (assert (io.open fileloc :r))
+      contents (file:read "*a")
+      (crates instrs) ((string.gmatch contents "(.+)\n\n(.+)"))
+      ]
+    (file:close)
+    [crates instrs]))
+  
+(let [fileloc (. _G.arg 1)
+      (crates instrs) (get-crates-insns fileloc)
+      ]
+  ;; (pp contents)
+  ;; (print split)
+  (pp crates)
+  (pp instrs)
+)
+
+; REPL helpers
+(tset _G :arg ["./data/example.txt"]) ; provides hint for arg[1] to the REPL
+(assert (= (. _G.arg 1) "../data/example.txt"))
+(local fennel (require :fennel))
+
+(fn _G.pp [x]
+  (print (fennel.view x)))
+;; (_G.pp _G.arg)
+
+
+;; REPL sandbox
+; Function vs lambda: failure to pass a specific or nil variable
+;; (fn nilable [a b c]
+;;   (print a b c))
+;; (nilable 10 12)
+;;
+;; (lambda non-nilable [a b c]
+;;   (print a b c))
+;; (non-nilable 10 12)
+
+
+;; (let [(a b) ((string.gmatch "hello\nmy\nrandom\nstranger\n\nin\nthis\nsmall\nworld" "(.+)\n\n(.+)"))]
+;;   (_G.pp a)
+;;   (_G.pp b))
+
+;; (let [split ((string.gmatch "hello\nmy\nrandom\nstranger\n\nin\nthis\nsmall\nworld" "(.+)\n"))]
+;;   (_G.pp split)
+;;   )
+
+;; (fn overpass [a]
+;;   (print a)) (overpass "hello" "world")
+;;
+;; (lambda overpass [a]
+;;   (print a)) (overpass "hello" "world")
+

2022/d5/src/d5.py

@@ -17,6 +17,7 @@ class MoveInsn:
 def part1(crates: list[list[str]], insns: list[MoveInsn]) -> str:
     for move in insns:
         for _ in range(move.how_many):
+            # print(crates)
             crates[move.to_crate - 1].append(crates[move.from_crate - 1].pop())
     return "".join([crate[-1] for crate in crates])
 
@@ -75,3 +76,4 @@ if __name__ == "__main__":
     import sys
     with open(sys.argv[1], "r") as f:
         main(f)
+

2022/d6/.envrc

@@ -0,0 +1,4 @@
+if command -v nix-shell &> /dev/null
+    then
+    use flake
+fi

2022/d6/flake.lock

@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1670064435,
+        "narHash": "sha256-+ELoY30UN+Pl3Yn7RWRPabykwebsVK/kYE9JsIsUMxQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "61a8a98e6d557e6dd7ed0cdb54c3a3e3bbc5e25c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

2022/d6/flake.nix

@@ -0,0 +1,61 @@
+{
+  description = "D4 AOC with Lua!";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+  outputs = { nixpkgs, flake-utils, ... } @ inputs:
+    flake-utils.lib.eachSystem flake-utils.lib.defaultSystems (sys:
+      let
+        overlays = [ ];
+        pkgs = import nixpkgs { system = sys; overlays = overlays; };
+        shellHookAfter = ''
+          echo "The input files should be placed under ./data/{submission,example}.txt"
+          echo "This problem shares one input between two parts"
+        '';
+        py_pkgs = [ pkgs.python310 ];
+        # lua_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.busted luapkgs.luafilesystem ])) ];
+        fennel_pkgs = [ (pkgs.lua.withPackages (luapkgs: [ luapkgs.fennel luapkgs.readline ])) ];
+      in
+      {
+        # Jack of all trades
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = py_pkgs ++ fennel_pkgs;
+          shellHook = ''
+            echo "> Default runtime. This contains both fennel and python3 env"
+            echo "Run ./run-py.sh for Python's output and ./run-fnl.sh for Fennel's output"
+          '' + shellHookAfter;
+        };
+        devShells = {
+          # nix develop ./#lua
+          # lua = pkgs.mkShell {
+          #   nativeBuildInputs = lua_pkgs;
+          #   shellHook = ''
+          #     echo "> Lua runtime"
+          #     echo "Run ./run-lua.sh to see the output of the solution"
+          #   '' + shellHookAfter;
+          # };
+
+          # nix develop ./#fennel
+          fennel = pkgs.mkShell
+            {
+              nativeBuildInputs = fennel_pkgs;
+              shellHook = ''
+                echo "> Fennel runtime"
+                echo "Run ./run-fnl.sh to see output of Fennel solution"
+              '' + shellHookAfter;
+            };
+
+          # nix develop ./#python
+          python = pkgs.mkShell {
+            nativeBuildInputs = py_pkgs;
+            shellHook = ''
+              echo "> Python3 runtime"
+              echo "Run ./run-py.sh to see the output of the solution"
+            '' + shellHookAfter;
+
+          };
+        };
+      }
+    );
+}

2022/d6/run-py.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+echo "example"
+python3 ./src/d6.py ./data/example.txt
+
+echo "submission"
+python3 ./src/d6.py ./data/submission.txt
+

2022/d6/src/d6.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+from typing import TextIO
+
+
+def part1(f: TextIO):
+    s = f.read().strip()
+    print(f"{s=}")
+    for i in range(3, len(s)):
+        if len({c for c in s[i-3:i+1]}) == 4:
+            return i + 1
+    return None
+
+def part2(f: TextIO):
+    s = f.read().strip()
+    print(f"{s=}")
+    for i in range(13, len(s)):
+        if len({c for c in s[i-13:i+1]}) == 14:
+            return i + 1
+    return None
+
+def main(fileloc: str):
+    with open(fileloc, "r") as f:
+        print(f"{part1(f)=}")
+
+    with open(fileloc, "r") as f:
+        print(f"{part2(f)=}")
+
+
+if __name__ == "__main__":
+    import sys
+    main(sys.argv[1])
+