Math类小结
package com.swift; public class MathDemo { public static void main(String[] args) { // TODO Auto-generated method stub //数学类的小总结 Math System.out.println(Math.pow(4, 3));//幂运算 64 System.out.println(Math.pow(4, 0.5));//4的开方 System.out.println(Math.pow(2, -2));//0.25 2的2次幂分之1 System.out.println(Math.sqrt(16));//0.25 2的2次幂分之1 square root sqrt System.out.println(Math.sqrt(25));//0.25 2的2次幂分之1 System.out.println(Math.abs(-3));//0.25 2的2次幂分之1 absolute System.out.println(Math.ceil(2.6));//0.25 2的2次幂分之1 absolute System.out.println(Math.ceil(2.1));//0.25 2的2次幂分之1 absolute System.out.println(Math.floor(2.1));//0.25 2的2次幂分之1 absolute System.out.println(Math.rint(2.1));//0.25 2的2次幂分之1 absolute 返回偶数 System.out.println(Math.round(2.1));//正数四舍五入,负数五舍六入 } }
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