Day 2

day2/p1.nim

@@ -0,0 +1,84 @@
+import os
+import std/strutils
+
+# A, X - rock
+# B, Y - paper
+# C, Z - scissors
+
+const
+  ROCK_POINTS = 1
+  PAPER_POINTS = 2
+  SCISSORS_POINTS = 3
+
+  ROCK = "A"
+  PAPER = "B"
+  SCISSORS = "C"
+
+  LOSE_POINTS = 0
+  DRAW_POINTS = 3
+  WIN_POINTS = 6
+
+  YOU_ROCK = "X"
+  YOU_PAPER = "Y"
+  YOU_SCISSORS = "Z"
+
+proc rock(symStr: string): int =
+  case symStr:
+  of YOU_ROCK:
+    ROCK_POINTS + DRAW_POINTS
+  of YOU_PAPER:
+    PAPER_POINTS + WIN_POINTS
+  of YOU_SCISSORS:
+    SCISSORS_POINTS + LOSE_POINTS
+  else:
+    0
+
+proc paper(symStr: string): int =
+  case symStr:
+  of YOU_ROCK:
+    ROCK_POINTS + LOSE_POINTS
+  of YOU_PAPER:
+    PAPER_POINTS + DRAW_POINTS
+  of YOU_SCISSORS:
+    SCISSORS_POINTS + WIN_POINTS
+  else:
+    0
+
+proc scissors(symStr: string): int =
+  case symStr:
+  of YOU_ROCK:
+    ROCK_POINTS + WIN_POINTS
+  of YOU_PAPER:
+    PAPER_POINTS + LOSE_POINTS
+  of YOU_SCISSORS:
+    SCISSORS_POINTS + DRAW_POINTS
+  else:
+    0
+
+proc calcScore(left, right: string): int =
+  case left:
+  of ROCK:
+    rock(right)
+  of PAPER:
+    paper(right)
+  of SCISSORS:
+    scissors(right)
+  else:
+    0
+
+
+proc main() =
+  let fileName = paramStr(1)
+
+  var sum = 0
+  var count = 0
+
+  for line in fileName.lines:
+    let sp = line.split(" ")
+    sum += calcScore(sp[0], sp[1])
+    count += 1
+
+  echo sum
+
+
+main()

day2/p2.nim

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+import os
+import std/strutils
+
+# A - rock
+# B - paper
+# C - scissors
+# X = lose
+# Y = draw
+# Z = win
+
+const
+  ROCK_POINTS = 1
+  PAPER_POINTS = 2
+  SCISSORS_POINTS = 3
+
+  ROCK = "A"
+  PAPER = "B"
+  SCISSORS = "C"
+
+  LOSE_POINTS = 0
+  DRAW_POINTS = 3
+  WIN_POINTS = 6
+
+  LOSE = "X"
+  DRAW = "Y"
+  WIN = "Z"
+
+proc rock(symStr: string): int =
+  case symStr:
+  of LOSE:
+    SCISSORS_POINTS + LOSE_POINTS
+  of DRAW:
+    ROCK_POINTS + DRAW_POINTS
+  of WIN:
+    PAPER_POINTS + WIN_POINTS
+  else:
+    0
+
+proc paper(symStr: string): int =
+  case symStr:
+  of LOSE:
+    ROCK_POINTS + LOSE_POINTS
+  of DRAW:
+    PAPER_POINTS + DRAW_POINTS
+  of WIN:
+    SCISSORS_POINTS + WIN_POINTS
+  else:
+    0
+
+proc scissors(symStr: string): int =
+  case symStr:
+  of LOSE:
+    PAPER_POINTS + LOSE_POINTS
+  of DRAW:
+    SCISSORS_POINTS + DRAW_POINTS
+  of WIN:
+    ROCK_POINTS + WIN_POINTS
+  else:
+    0
+
+proc calcScore(left, right: string): int =
+  case left:
+  of ROCK:
+    rock(right)
+  of PAPER:
+    paper(right)
+  of SCISSORS:
+    scissors(right)
+  else:
+    0
+
+
+proc main() =
+  let fileName = paramStr(1)
+
+  var sum = 0
+  var count = 0
+
+  for line in fileName.lines:
+    let sp = line.split(" ")
+    sum += calcScore(sp[0], sp[1])
+    count += 1
+
+  echo sum
+
+
+main()