Added AOC 2022 day 05

www/statics/aoc/2022/05_solution-1.nim

@@ -0,0 +1,62 @@
+import std/strutils
+import std/sequtils
+import std/algorithm
+
+proc run05_1(): string =
+    const input = staticRead"../input/day05.txt"
+
+    let lines = splitLines(input).filter(proc(p: string): bool = p != "")
+
+    let stackcount = lines.filter(proc(p:string): bool = p.startsWith(" 1 "))[0].toSeq().filter(proc(p: char): bool = p != ' ').len()
+
+    #echo stackcount
+
+    var stacks = newSeq[seq[char]](0)
+    for sidx in 0..(stackcount-1):
+        stacks.add(newSeq[char](0))
+
+    var headerLen = 0
+
+    for line in lines:
+        if line.startsWith(" 1 "):
+            break
+        headerLen += 1
+        for sidx in 0..(len(stacks)-1):
+            let chr = line[1 + 4 * sidx]
+            if chr != ' ':
+                stacks[sidx].add(chr)
+
+    for i in 0..(stackcount-1):
+        stacks[i].reverse()
+
+    #echo stacks
+
+    for line in lines[headerLen+1..len(lines)-1]:
+        let split = line.split(" ")
+
+        let cnt = parseInt(split[1])
+        let src = parseInt(split[3])-1
+        let dst = parseInt(split[5])-1
+
+        #echo "move", cnt, " : ", src, " -> ", dst
+
+        for _ in 1..cnt:
+            let chr = stacks[src][len(stacks[src]) - 1]
+            stacks[src].delete(len(stacks[src]) - 1)
+            stacks[dst].add(chr)
+
+
+    #echo stacks
+
+    let heads = stacks.map(proc(p:seq[char]): char = p[p.len()-1])
+
+    #echo heads
+
+    return cast[string](heads)
+
+
+when not defined(js):
+    echo run05_1()
+else:
+    proc js_run05_1(): cstring {.exportc.} =
+        return cstring(run05_1())