17 lines
439 B
Dart
17 lines
439 B
Dart
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class WordCount {
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Map<String, int> countWords(String input) {
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var exp = new RegExp(r"(\w+('\w+)?)");
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return exp
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.allMatches(input)
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.map((e) => e.group(0)!.toLowerCase())
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.fold(new Map<String, int>(), (Map<String, int> counts, String word) {
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if (counts.containsKey(word)) {
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counts[word] = counts[word]! + 1;
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} else {
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counts[word] = 1;
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}
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return counts;
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});
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}
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}
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