50. Pow(x, n)
Implement pow(x, n), which calculates x raised to the power n (xn).
Example 1:
Input: 2.00000, 10Output: 1024.00000
Example 2:
Input: 2.10000, 3Output: 9.26100
Example 3:
Input: 2.00000, -2Output: 0.25000Explanation: 2-2 = 1/22 = 1/4 = 0.25
题意：实现指数函数
代码如下：
/** * @param {number} x * @param {number} n * @return {number} */var myPow = function(x, n) { ???if(n==0){ ???????return 1; ???} ???if(n<0){ ???????n=-n; ???????x=1/x; ???} ???return (n%2===0)?myPow(x*x,n/2):x*myPow(x*x,parseInt(n/2));};50. Pow(x, n)（js）
原文地址：https://www.cnblogs.com/xingguozhiming/p/10428476.html