Week 338, solutions in Raku by @ash

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diff --git a/challenge-338/ash/raku/ch-1.raku b/challenge-338/ash/raku/ch-1.raku
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+# Task 1 of The Weekly Challenge 338
+# https://theweeklychallenge.org/blog/perl-weekly-challenge-338/#TASK1
+
+say max-sum([[4,  4, 4, 4],
+             [10, 0, 0, 0],
+             [2,  2, 2, 9]]); # 16
+
+say max-sum([[1, 5],
+             [7, 3],
+             [3, 5]]); # 10
+
+say max-sum([[1, 2, 3],
+             [3, 2, 1]]); # 6
+
+say max-sum([[2, 8, 7],
+             [7, 1, 3],
+             [1, 9, 5]]); # 17
+
+say max-sum([[10, 20,  30],
+             [5,  5,   5],
+             [0,  100, 0],
+             [25, 25,  25]]); # 100
+
+sub max-sum(*@matrix) {
+    @matrix>>.sum.max
+}
diff --git a/challenge-338/ash/raku/ch-2.raku b/challenge-338/ash/raku/ch-2.raku
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+# Task 2 of The Weekly Challenge 338
+# https://theweeklychallenge.org/blog/perl-weekly-challenge-338/#TASK2
+
+say max-distance([4, 5, 7], [9, 1, 3, 4]); # 6
+say max-distance([2, 3, 5, 4], [3, 2, 5, 5, 8, 7]); # 6
+say max-distance([2, 1, 11, 3], [2, 5, 10, 2]); # 9
+say max-distance([1, 2, 3], [3, 2, 1]); # 2
+say max-distance([1, 0, 2, 3], [5, 0]); # 5
+
+sub max-distance(@a, @b) {
+    ((@a X @b).map: {abs([-] $_)}).max
+}