题解 | #乘法#
乘法
http://www.nowcoder.com/practice/6429776e4630435cbc3eeb36bdf41f83
思路:先换成整数,再乘,再除
function multiply(a, b) { let s1=a.toString(), s2=b.toString(), m=0; if(s1.includes('.')){ m+=s1.split('.')[1].length } if(s2.includes('.')){ m+=s2.split('.')[1].length } return s1.replace('.','')*s2.replace('.','')/Math.pow(10,m) }