longest word in go

main.go

package main

import "fmt"

func LongestWord(sen string) string {

	// code goes here
	// Note: feel free to modify the return type of this function
//	fmt.Println("Length: ", len(sen))

	inWord := false
	isLetter := false
	wordStart := 0
	longestWordStart := 0
	longestWordLength := 0
	for i, c := range sen {
		isLetter = (c >= 65 && c <= 122) || (c >= 48 && c <= 57)

		if !inWord && isLetter {
			wordStart = i
		}
		inWord = isLetter

	//	fmt.Printf("\n%v: %s, isLetter: %v, inWord: %v", i, string(c), isLetter, inWord)
		if inWord {
			wordLength := i - wordStart + 1
			if wordLength > longestWordLength {
				longestWordStart = wordStart
				longestWordLength = wordLength
			}
		}

	}
//	fmt.Println()
//	fmt.Println(longestWordStart, longestWordLength)
	return string(sen[longestWordStart : longestWordStart+longestWordLength])

}
func main() {

  // do not modify below here, readline is our function
  // that properly reads in the input for you
  fmt.Println(LongestWord(readline()))

}