Fors en kotlin

for.kt

for (it in accion.withIndex()) {
        if (!it.value.isDigit())
            return null
        if (it.index >= tam)
            return null
}

for ((i,n) in num.withIndex())
        for ((j,m) in sec.withIndex())
            if (n == m) {
                if (i == j) famas++
                else toques++
            }