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Java四舍五入,如double类型1.44449,保留小数点后一位,要求答案是1.5
人气:457 ℃ 时间:2020-05-16 18:56:45
解答
public class floor {
public static void main(String args[]) {
double a = 1.4444449;
double c = 1000000;
double b = 0;
int i = 6;
while(i > 0) {
b = Math.ceil(a * c);
a = a/ 10;
i--;
}
System.out.println(b/10);
}
}
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