用js寫三個數，讓三個數從小到大排列

console.log(`請輸入三個數：`);

let num1 = readline.question() – 0;

let num2 = readline.question() – 0;

let num3 = readline.question() – 0;

let num4;

if (num1 > num2) {

num4 = num1;

num1 = num2;

num2 = num4;

}

if (num2 > num3) {

num4 = num2;

num2 = num3;

num3 = num4;

}

if (num1 > num3) {

num4 = num1;

num1 = num3;

num3 = num4;

}

console.log(num1 + `<` + num2 + `<` + num3);