package main
 
import (
    "fmt"
    "unicode"
)
 
func main() {
    saneAdvice := "Don’t make the mistake of trading on margin simply due to greed or desperation to make up for lost ground."
    result := make([]rune, len(saneAdvice))
 
    for i, j := range saneAdvice {
        if i%2 == 1 {
            result[i] = unicode.ToLower(j)
        } else {
            result[i] = unicode.ToUpper(j)
        }
    }
    fmt.Println(string(result))
}

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