86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"github.com/dariubs/percent"
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"io/ioutil"
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"sort"
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"strings"
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)
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type letter struct {
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upperCase string
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lowerCase string
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count int
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frequency float64
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}
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type letterList []letter
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func (l letterList) Len() int {
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return len(l)
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}
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func (l letterList) Less(i, j int) bool {
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return l[i].frequency > l[j].frequency
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}
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func (l letterList) Swap(i, j int) {
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l[i], l[j] = l[j], l[i]
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}
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var alphabet = []rune{
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
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'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
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}
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var letters = make([]letter, len(alphabet))
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func initLetterStruct() {
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for index := range alphabet {
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letters[index].upperCase = string(alphabet[index])
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letters[index].lowerCase = string(alphabet[index] + 32)
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}
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}
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func readFile(relativePath string) string {
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content, err := ioutil.ReadFile(relativePath)
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if err != nil {
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fmt.Println(err)
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}
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return string(content)
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}
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func countLetters(inputText string) int {
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totalCount := 0
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for index := range alphabet {
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letters[index].count +=
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strings.Count(inputText, letters[index].lowerCase) +
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strings.Count(inputText, letters[index].upperCase)
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totalCount += letters[index].count
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}
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return totalCount
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}
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func calculateFrequency(totalCount int) {
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for index := range alphabet {
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letters[index].frequency = percent.PercentOf(letters[index].count, totalCount)
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}
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}
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func printResult() {
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for index := range alphabet {
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l := letters[index]
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fmt.Printf(
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"The letter %s (%s) occurs %d times in the text and the frequencyArray in percent is %0.2f\n",
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l.upperCase, l.lowerCase, l.count, l.frequency,
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)
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}
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}
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func main() {
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initLetterStruct()
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totalCount := countLetters(readFile("plaintext.txt"))
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calculateFrequency(totalCount)
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sort.Sort(letterList(letters))
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printResult()
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}
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