fun countWordOccurrences(str: String): Map<String, Int> {
// Split the str into words, using whitespace and punctuation as delimiters
val words = str.split("\\W+".toRegex()).filter { it.isNotEmpty() }
// Create a map to store the word counts
val wordCountMap = mutableMapOf<String, Int>()
// Iterate through the words and count their occurrences
for (word in words) {
val lowerCaseWord = word.lowercase() // Convert to lowercase for case-insensitive counting
wordCountMap[lowerCaseWord] = wordCountMap.getOrDefault(lowerCaseWord, 0) + 1
}
return wordCountMap
}
fun main() {
val str = "Kotlin is a cross-platform, statically typed, " +
"general-purpose high-level programming language " +
"with type inference. Kotlin is designed to " +
"interoperate fully with Java"
val wordOccurrences = countWordOccurrences(str)
for ((word, count) in wordOccurrences) {
println("$word: $count")
}
}
/*
run:
kotlin: 2
is: 2
a: 1
cross: 1
platform: 1
statically: 1
typed: 1
general: 1
purpose: 1
high: 1
level: 1
programming: 1
language: 1
with: 2
type: 1
inference: 1
designed: 1
to: 1
interoperate: 1
fully: 1
java: 1
*/
