java四舍五入BigDecimal保留两位小数的实现方法: // 四舍五入保留两位小数System.out.println("四舍五入取整:(3.856)=" + new BigDecimal(i).setScale(2, BigDecimal.ROUND_HALF_UP)); JavaScript 保留两位小数的实现方法:四舍五入 var num =2.446242342; num = num.toFixed(2); // 输出结果为 2.45
package seven_topic; import java.util.*; public class p_19_1 { public static void main(String[] args) { @SuppressWarnings("resource") Scanner reader = new Scanner(System.in); System.out.println("请输入学生学号: "); String a = reader.next(); S
def a4(arg): ret = {} for key,value in arg.items(): if len(value) > 2: ret[key] = value[0:2] else: ret[key] = value return ret dic = {"} r = a4(dic) print(r)
import java.math.BigDecimal; import java.text.DecimalFormat; import java.text.NumberFormat; public class format { double f = 111231.5585; public void m1() { BigDecimal bg = new BigDecimal(f); double f1 = bg.setScale(2, BigDecimal.ROUND_HALF_UP).doubl
android:inputType="numberDecimal" private InputFilter lengthFilter = new InputFilter() { @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { // source:当前输入的字符 // start:输入字符的开始位置 //
