标签:turn gif console 思想 oct div nbsp lse document
动态规划之青蛙跳台阶
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <script> //一只青蛙,一次只能跳一级台阶或两级台阶,问这个青蛙跳上n级台阶有多少种跳法? //核心思想:fn(n) = fn(n - 1) + fn(n - 2) function jump(n){ if(n <= 0){ return 0; }else if(n == 1){ return 1; }else if(n == 2){ return 2; } return jump(n - 1) + jump(n - 2); } console.log(jump(4)); //一只青蛙,一次只能跳一级台阶或两级台阶或n级台阶,问这个青蛙跳上n级台阶有多少种跳法? //核心思想:fn(n) = fn(n - 1) + fn(n - 2) + ... + fn(2) + fn(1) function jump2(n){ if(n <= 0){ return 0; }else if(n == 1){ return 1; }else if(n == 2){ return 2; } var result = 0; for(var i = 1; i < n; i++){ result += jump2(n - i); } return result + 1;//+1表示从0级台阶直接跳上n级台阶 } console.log(jump2(3)); </script> </body> </html>
17.动态规划之青蛙跳台阶代码实现(JavaScript版)
标签:turn gif console 思想 oct div nbsp lse document
原文地址:https://www.cnblogs.com/lanshanxiao/p/13226631.html