Question

How to count the occurrences of each letter in char array with Go

Answer 1

package main

import (
	"fmt"
)

func countLetters(chars []rune) map[rune]int {
	letterCount := make(map[rune]int)
	
	for _, char := range chars {
		letterCount[char]++
	}
	
	return letterCount
}

func main() {
	chars := []rune{'g', 'o', 'g', 'c', 'd', 'c', 'e', 'f', 'e', 'g'}
	
	letterCount := countLetters(chars)
	for char, count := range letterCount {
		fmt.Printf("%c: %d\n", char, count)
	}
}




/*
run:
     
e: 2
f: 1
g: 3
o: 1
c: 2
d: 1

*/
 

 

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