first non repeated character in a string

# First non repeating character position in a string def first_non_repeating_letter(str) strL = str.downcase strL.each_char.with_index do |v, i| if strL.index(v) == strL.rindex(v) return i end end -1 end print "First non repeating character position = ", first_non_repeating_letter("abcdcba"); # 3

First non repeating character position in a string

// First non repeating character position in a string
package main

import (
    "fmt";
    "strings"
)

func FirstNonRepeating(str string) int {
  strL := strings.ToLower(str)
  for i:= range str {
    count:=0
    for j:= range str {
      if strL[i] == strL[j] {
        count++
      }
    }
    if count == 1 {
      return i
    }
  }
return -1
}

func main() {
    fmt.Printf("First non repeating character position = %d", 
        FirstNonRepeating("abcdcba"))  // 3
}

Posted by: Guest on October-07-2021

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