📅  最后修改于: 2022-03-11 15:02:26.002000             🧑  作者: Mango
var looping = function(n) {
var a = 0, b = 1, f = 1;
for(var i = 2; i <= n; i++) {
f = a + b;
a = b;
b = f;
}
return f;
};