下面是五种实现斐波那契数列的方法 循环 function fibonacci(n){ var res1 = 1; var res2 = 1; var sum = res2; for(var i = 1;i n;i ++){ sum = res1 + res2; res1 = res2; res2 = sum; } return sum;} 普通递归 function fibonacci (
下面是五种实现斐波那契数列的方法
循环
function fibonacci(n){ var res1 = 1; var res2 = 1; var sum = res2; for(var i = 1;i < n;i ++){ sum = res1 + res2; res1 = res2; res2 = sum; } return sum; }
普通递归
function fibonacci (n) { if ( n <= 1 ) {return 1}; return fibonacci(n - 1) + fibonacci(n - 2); }
尾递归
function fibonacci(n, ac1=1,ac2=1){ if(n<=1){return ac2} return fibonacci(n-1, ac2, ac1 + ac2) } Generator 函数和for...of循环 // Generator 函数和for...of循环 function* fibonacci() { let [prev, curr] = [0, 1]; // foo(;;)相当于死循环 等于while(1) for (;;) { yield curr; [prev, curr] = [curr, prev + curr]; } } for (let n of fibonacci()) { if (n > 1000) break; console.log(n); }
闭包实现
const fibonacci = function(){ var mem = [0,1]; var f = function(n){ var res = mem[n]; if(typeof res !== 'number'){ mem[n] = f(n-1) + f(n-2); res = mem[n]; } return res; } return f; }();
到此这篇关于JS实现斐波那契数列的五种方式(小结)的文章就介绍到这了,更多相关JS 斐波那契数列内容请搜索易盾网络以前的文章或继续浏览下面的相关文章希望大家以后多多支持易盾网络!