word_count.go

import "strings"
	
func WordCount(s string) map[string]int {
	counts := make(map[string]int)
	words := strings.Fields(s)
	for _, word := range words {
		count, ok := counts[word]
		if ok {
			counts[word] = count + 1
		} else {
			counts[word] = 1
		}
	}
	return counts
}