Question

java 两个数组的除法

有两个int数组a[]和b[]，里面有若干值，将值相除（a[1]/b[1]），存到c[]里
要怎么写？还要判断b[]数组里的值不含0，保留两位小数
谢谢

Answer 1

public static void main(String[] args) {
int[] a = {1,2,3,23,56,45,88};
int[] b = {3,2,3,23,56,45,88};
double[] c = new double[a.length];
for(int i = 0;i<a.length;i++){
if(b[i] == 0){
return;
}

double s = (double)a[i]/b[i];
// DecimalFormat df = new DecimalFormat("#.00");
// System.out.println(df.format(s));
// c[i] = Double.valueOf(df.format(s));
// System.out.println(c[i]);
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(2);
System.out.println(nf.format(s));
c[i] = Double.parseDouble(nf.format(s));
}
}

Answer 2

for(int i=0;i<a.length;i++)
{
if(b[i]==0)
{
system.out.println("b中出现0，错误");
return;
}
else{
c[i]=String.format("%.2f",a[i]/b[i]);

}
}