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JavaScriptNotes/JS-AC/ac08.js at master · 7256/JavaScriptNotes · GitHub

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//题目8：一只青蛙一次可以跳上1级台阶，也可以跳上2级。求该青蛙跳上一个n级的台阶总共有多少种跳法。
function jumpFloor(number) {
    if (number == 1) {
        return 1;
    if (number == 2) {
        return 2;
    n1 = 1;
    n2 = 2;
    while (number > 2) {
        tmp = n2;
        n2 = n1 + n2;
        n1 = tmp;
        number--;
    return n2;

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