Overview

A string is given. The objective is to reverse all vowels in that string

Example 1

Input: "simple"
Output: "sempli"

Example 2

Input: "complex"
Output: "cemplox"

Program

Below is the program for the same

package main
import "fmt"
func reverseVowels(s string) string {
runeS := []rune(s)
lenS := len(runeS)
for i, j := 0, lenS-1; i < j; {
for i < j {
if !vowel(runeS[i]) {
i++
} else {
break
}
}
if i == j {
break
}
for i < j {
if !vowel(runeS[j]) {
j--
} else {
break
}
}
if i == j {
break
}
runeS[i], runeS[j] = runeS[j], runeS[i]
i++
j--
}
return string(runeS)
}
func vowel(s rune) bool {
if s == 'a' || s == 'e' || s == 'i' || s == 'o' || s == 'u' {
return true
}
if s == 'A' || s == 'E' || s == 'I' || s == 'O' || s == 'U' {
return true
}
return false
}
func main() {
output := reverseVowels("simple")
fmt.Println(output)
output = reverseVowels("complex")
fmt.Println(output)
}

Output:

sempli
cemplox

Note: Check out our Golang Advanced Tutorial. The tutorials in this series are elaborative and we have tried to cover all concepts with examples. This tutorial is for those who are looking to gain expertise and a solid understanding of golang - Golang Advance Tutorial

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