Go solution to the even-number challenge in Go Essential Tranining

even-numbers.go

package main

import (
        "fmt"
)

// how many even ended numbers result from multiplying two four digit numbers

func main() {
        // setup a new counter
        even_numbers := 0

        // setup a loop with x as a seed
        for x := 1000; x <=9999; x++ {

                //iterate over that loop with y incrementing as well
                for y := x; y <= 9999; y++ {

                        // work out the answer
                        result := x*y
                        result_str := fmt.Sprintf("%d", result)

                        // check if the answer has the same start and end digit
                        if result_str[0] == result_str[len(result_str)-1] {
                                // increment the counter
                                even_numbers++
                        }
                }
        }
        // at the end, print out the count...
        fmt.Printf("We found %d even-ended numbers", even_numbers)
        fmt.Println("")

}