Solución examen

function repetir(cadena, numero) {
    if (cadena.length != 1) { return ""; }
    return cadena.repeat(numero);
}

console.log(repetir("a", 6))
console.log(repetir("aasdasd", 6))

function masLarga(cad1, cad2) {
    return cad1.length > cad2.length ? cad1 : cad2
}

console.log(masLarga("hola", "adios"))
console.log(masLarga("hola amigos", "adios"))

function eliminarPares(lista) {
    return lista.filter(cad => cad.length % 2 != 0)
}

console.log(eliminarPares(["aa", "bbb", "ccccc", "dddd"]))

function repetidas(cadena){
    for(i=1;i<cadena.length;i++){
        if (cadena.at(i)==cadena.at(i-1) && cadena.at(i)!=" "){
            return true;
        }
    }
    return false;
}

function repetidasForeach(cadena){
    let res=false
    cadena.split('').forEach((valor,i)=>{
        if (valor==cadena.at(i+1)){
            res= true;
            return
        }
    })
    return res;
}


console.log(repetidasForeach('La luvia  en madrid'))