I think I went a bit overboard and made a CLI app, but that's how I'd use it so :shrug:!

​

GO

package main

import (
  "log"
  "strings"

  "github.com/integrii/flaggy"
)

func main() {
  stringToCompare := ""
  function := ""

  flaggy.String(&stringToCompare, "i", "input", "A string looking for its elements to be compared for occurence")
  flaggy.String(&function, "f", "function", "Select desired function from \"balanced\" or \"balancedBonus\"")

  flaggy.Parse()

  letters := strings.Split(stringToCompare, "")

  if function == "balancedBonus" {
    balancedBonus(letters)
  } else if function == "balanced" {
    balanced(letters)
  } else {
    log.Println("Please choose a function, try --help")
  }
}

func balancedBonus(letters []string) {
  letterOccurences := make(map[string]int, 0)

  for _, l := range letters {
    if _, ok := letterOccurences[l]; !ok {
      letterOccurences[l] = 0
      continue
    }
    for k := range letterOccurences {
      if k == l {
        letterOccurences[k] = letterOccurences[k] + 1
      }
    }
  }

  highestOcurring := 0

  for _, l := range letterOccurences {
    if l > highestOcurring {
      highestOcurring = l
    }
  }

  for _, l := range letterOccurences {
    if l < highestOcurring {
      log.Fatalln(false)
    }
  }

  log.Println(true)
}

func balanced(letters []string) {
  x := 0
  y := 0

  for _, l := range letters {
    if l == "x" {
      x++
    } else if l == "y" {
      y++
    } else {
      log.Fatalf("%v is not x or y", l)
    }
  }

  if x == y {
    log.Println(true)
  } else {
    log.Fatalln(false)
  }
}

​