add day 2

2/part1.ps1

@@ -0,0 +1,68 @@
+# A = Rock
+# B = Paper
+# C = Scissors
+
+# X = Rock      1 points
+# Y = Paper     2 points
+# Z = Scissors  3 points
+
+# Loss          0 points
+# Draw          3 points
+# Win           6 points
+
+
+$scoring = @{
+    # rock
+    X = 1
+    # paper
+    Y = 2
+    # scissors
+    Z = 3
+
+    loss = 0
+    draw = 3
+    win = 6
+}
+
+$shapes = @{
+    # rock
+    A = @{
+        # rock
+        X = $scoring.draw
+        # paper
+        Y = $scoring.win
+        # scissors
+        Z = $scoring.loss
+    }
+    # paper
+    B = @{
+        # rock
+        X = $scoring.loss
+        # paper
+        Y = $scoring.draw
+        # scissors
+        Z = $scoring.win
+    }
+    # scissors
+    C = @{
+        # rock
+        X = $scoring.win
+        # paper
+        Y = $scoring.loss
+        # scissors
+        Z = $scoring.draw
+    }
+}
+
+
+$points = 0
+
+Get-Content input
+| ForEach-Object {
+    $shape,$response = $_.Split(' ')
+
+    $points += $scoring.$response
+    $points += $shapes.$shape.$response
+}
+
+$points

2/part2.ps1

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+# A = Rock
+# B = Paper
+# C = Scissors
+
+# Rock      1 points
+# Paper     2 points
+# Scissors  3 points
+
+# X = Loss  0 points
+# Y = Draw  3 points
+# Z = Win   6 points
+
+
+$scoring = @{
+    rock = 1
+    paper = 2
+    scissors = 3
+
+    X = 0
+    Y = 3
+    Z = 6
+}
+
+$shapes = @{
+    # rock
+    A = @{
+        # loss
+        X = 'scissors'
+        # draw
+        Y = 'rock'
+        # win
+        Z = 'paper'
+    }
+    # paper
+    B = @{
+        # loss
+        X = 'rock'
+        # draw
+        Y = 'paper'
+        # win
+        Z = 'scissors'
+    }
+    # scissors
+    C = @{
+        # loss
+        X = 'paper'
+        # draw
+        Y = 'scissors'
+        # win
+        Z = 'rock'
+    }
+}
+
+
+$points = 0
+
+Get-Content input
+| ForEach-Object {
+    $shape,$result = $_.Split(' ')
+
+    $points += $scoring.($shapes.$shape.$result)
+    $points += $scoring.$result
+}
+
+$points