Question

How to find the first repeated character in a string with Go

Answer 1

package main

import (
    "fmt"
)

func getFirstRepeatedCharacter(s string) rune {
    len := len(s)

    for i := 0; i < len; i++ {
        for j := 0; j < i; j++ {
            if s[i] == s[j] {
                return rune(s[i])
            }
        }
    }

    return ' '
}

func main() {
    s := "abcdxypcbop"
    
    result := getFirstRepeatedCharacter(s)

    if result != '-' {
        fmt.Printf("First repeated character: %c\n", result)
    } else {
        fmt.Println("No repeated characters")
    }
}




/*
run:

First repeated character: c

*/

 

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