Challenge 15 - Repeating Letters

👋 Welcome Gophers! In this challenge, you are tasked with implementing a function DoubleChars which will take in a string and then return another string which has every letter in the word doubled.

package main

import "fmt"

func DoubleChars(original string) string {
  endString := make([]rune, 0, len(original)*2)
  for _, c := range original {
    endString = append(endString, c, c)
  }
  return string(endString)
}

func main() {
  fmt.Println("Repeating Letters Challenge")

  original := "gophers"
  doubled := DoubleChars(original)
  fmt.Println(doubled) // ggoopphheerrss
}

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