Week 262 solutions in Groovy

2 files changed, 18 insertions, 0 deletions

diff --git a/challenge-262/2colours/groovy/ch-1.groovy b/challenge-262/2colours/groovy/ch-1.groovy
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+++ b/challenge-262/2colours/groovy/ch-1.groovy
@@ -0,0 +1,6 @@
+import groovy.json.JsonSlurper
+
+final REPLACEMENTS = ['()', '[]']
+def jsonSlurper = new JsonSlurper()
+def ints = jsonSlurper.parseText(System.console().readLine('@ints = ').tr(*REPLACEMENTS))
+println ints.groupBy{ Integer.signum(it) }.findAll{ it.key.abs() > 0 }.values()*.size().max()
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diff --git a/challenge-262/2colours/groovy/ch-2.groovy b/challenge-262/2colours/groovy/ch-2.groovy
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+++ b/challenge-262/2colours/groovy/ch-2.groovy
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+import groovy.json.JsonSlurper
+
+final REPLACEMENTS = ['()', '[]']
+def jsonSlurper = new JsonSlurper()
+def ints = jsonSlurper.parseText(System.console().readLine('@ints = ').tr(*REPLACEMENTS))
+def k = System.console().readLine('$k = ').toInteger()
+println ints.withIndex().collect { it, index ->
+    Integer neededFactor = k / (k as BigInteger).gcd(index as BigInteger)
+    Integer nextValid = Math.ceil((index + 1) / neededFactor) * neededFactor;
+    def possible_values = ints.drop(nextValid).collate(neededFactor)*.get(0)
+    possible_values.count(it)
+}.sum()
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