求斐波拉契数列的迭代方式，是否正确？

[PachVerb]

问题定位于: stack/utils.ts

function fibonacciIterative(n: number) {
  if ((n = 0)) return 0;
  if ((n = 1)) return 1;

  let fibNMinus2 = 0;
  let fibNMinus1 = 1;
  let fibN = n;
  for (let i = 2; i < n; i++) {
    fibN = fibNMinus1 + fibNMinus2;
    // why fibNminus2 is not update?
    fibNMinus1 = fibN;
  }

  return fibN;
}

[PachVerb]

问题定位于: stack/utils.ts

function fibonacciIterative(n: number) {
  if ((n = 0)) return 0;
  if ((n = 1)) return 1;

  let fibNMinus2 = 0;
  let fibNMinus1 = 1;
  let fibN = n;
  for (let i = 2; i < n; i++) {
    fibN = fibNMinus1 + fibNMinus2;
    // why fibNminus2 is not update?
    fibNMinus1 = fibN;
  }

  return fibN;
}

循环迭代时，未更新变量fibNMinus2,会导致迭代出来的数列，非非波拉契数列 👍