tasks a-s

Task/Execute-a-Markov-algorithm/Groovy/execute-a-markov-algorithm-1.groovy

@@ -0,0 +1,25 @@
+def markovInterpreterFor = { rules ->
+    def ruleMap = [:]
+    rules.eachLine { line ->
+        (line =~ /\s*(.+)\s->\s([.]?)(.+)\s*/).each { text, key, terminating, value ->
+            if (key.startsWith('#')) { return }
+            ruleMap[key] = [text: value, terminating: terminating]
+        }
+    }
+    [interpret: { text ->
+        def originalText = ''
+        while (originalText != text) {
+            originalText = text
+            for (Map.Entry e : ruleMap.entrySet()) {
+                if (text.indexOf(e.key) >= 0) {
+                    text = text.replace(e.key, e.value.text)
+                    if (e.value.terminating) {
+                        return text
+                    }
+                    break
+                }
+            }
+        }
+        text
+    }]
+}

Task/Execute-a-Markov-algorithm/Groovy/execute-a-markov-algorithm-2.groovy

@@ -0,0 +1,33 @@
+def verify = { ruleset ->
+    [withInput: { text ->
+        [hasOutput: { expected ->
+            def result = ruleset.interpret(text)
+            println "Input: '$text' has output: '$result'"
+            assert expected == result
+        }]
+    }]
+}
+
+def ruleset1 = markovInterpreterFor("""
+# This rules file is extracted from Wikipedia:
+# http://en.wikipedia.org/wiki/Markov_Algorithm
+A -> apple
+B -> bag
+S -> shop
+T -> the
+the shop -> my brother
+a never used -> .terminating rule""")
+println ruleset1.interpret('I bought a B of As from T S.')
+verify ruleset1 withInput 'I bought a bag of apples from T shop.' hasOutput 'I bought a bag of apples from my brother.'
+
+def ruleset2 = markovInterpreterFor("""...""")
+verify ruleset2 withInput 'I bought a B of As from T S.' hasOutput 'I bought a bag of apples from T shop.'
+
+def ruleset3 = markovInterpreterFor("""...""")
+verify ruleset3 withInput 'I bought a B of As W my Bgage from T S.' hasOutput 'I bought a bag of apples with my money from T shop.'
+
+def ruleset4 = markovInterpreterFor("""...""")
+verify ruleset4 withInput '_1111*11111_' hasOutput '11111111111111111111'
+
+def ruleset5 = markovInterpreterFor("""...""")
+verify ruleset5 withInput '000000A000000' hasOutput '00011H1111000'