我编写斐波那契数列的这段 Javascript 代码有什么问题？ [关闭]

Question

斐波那契数列代码在这里

function fibonnica(g) {
  var result, n;
  if (g == 1) {
    return g; //if enterd no is 1 then 1 that is very apparent
  } else {
    result = g; //7
    n = g - 1; //6
    while (n > 0) {
      result *= n ///7*6 second time 7*5 and so on..
      n = n - 1; //n=5
    }
    return result;
  }
}
console.log(fibonnica(7)); //why 7  is the output

请只告诉错误而不是我想要推动自己的解决方案

Answer 1

你需要切换条件来检查更大的数字，而不是更小的数字。

while (n > 0) {
//       ^

function fibonnica(g) {
    var result, n;
    if (g == 1) {
        return g;
    } else {
        result = g;
        n = g - 1;
        while (n > 0) {
            result *= n;
            n = n - 1;
        }
        return result;
    }
}
console.log(fibonnica(7)); // 5040