Java编程挑战：最少钱币组合求解及圆锥体类实现详解

Java编程:最少钱币数，这是一个古老而又经典的问题，用给定的几种钱币

/***普通人民币金额的简单初始化*/publicclassTest{publicstaticvoidmain(String[]args){int[]commonMoney={100,50,20,10,5,1};System.out.println(getLeastNum(108,commonMoney));}staticStringgetLeastNum(inttargetMoney,int[]commonMoney){StringBufferbuffer=newStringBuffer();intnum=0,total=0;Stringresult=targetMoney+"需要$最低金额";for(intmoney:commonMoney){if(targetMoney>=money){total+=num=targetMoney/money;targetMoney=targetMoney%money;buffer.append(","+num+"张"+money+"$");}if(0==targetMoney)break;}returnresult+total+"张币分别为："+buffer.substring(1);}}输出：108$需要至少5点钱，即：1件100$，1件5$，3件1$

有关java编程题目？

按照课题要求编写的圆、锥体和测试类Java程序如下

test.java文件内容如下

classCircle{

PrivateDoubler;

PrivateStringgcolor;

publiccircle(doubler){

this.r=r;

}

publicdoublearea(){

returnMath.PI*r*r;

}

publicdoubleperimeter(){

returnMath.PI*2*r;

}

publicdoublegetR()

返回is.r;

}

publicvoidsetR(doubler){

this.r=r;

}

publicStringgetColor(){

返回它的.color;

}

publicvoidsetColor(Stringcolor){

>

this.color=color;

}

publicStringToString(){

返回"圆的半径为"+r+"，颜色为"+color;

}

}

classcon{

privatecircle;

privateedoubleh;

privateStringcolor;

publicconic(Circlec,doubleh){

this.c=c;

this.h=h;

}

publicdoublevolume(){

return1.0/3*c.area()*h;

}

publicCirclegetCircle(){

退货.c;

}

publicvoidsetCircle(circle){

this.c=c;

}

publicdoublegetH(){

返回他的。
publicStringgetColor(){

返回this.color;

}

publicvoidsetColor(Stringcolor){

this.color=color;

}

publicStringToString(){

return"圆锥体的底面积为"+c.area()+"，高度是“+h+”，颜色是“+color;

}

}

publicClassTest

publiccstaticvoidmain(String[]args){

Circlecircle1=newCircle(2.5);

circle1.setColor('red');

System.out.println(circle1.toString());

System.out.('圆的面积是'+circle1.area());

System.out.println("圆的周长为"+circle1.perimeter());

Conecirclar1=newCone(circle1,2.7);

circlar1.setColor("blue");

System.outt.println(circlar1.toString());

System.out.println("圆锥体的体积是"+circlar1.volume());

}

}

Java编程题

1.importjava.util.Scanner;publicclassCube{privatedoublelen;//确定边长//获取边长publicdoublegetLen(){returnlen;}//设置边长publicvoidsetLen(doublelen){this.len=len;}//计算表面积publicdoublegetArea(doublelen){returnlen*len*6;}//计算体积publicdoublegetVolume(doublelen){returnlen*len*len;}publicstaticvoidmain(String[]args){Cubec=newCube();System.out.print("请输入边长：");c.setLen(newScanner(System.in))).nextDouble());System.out.println("一个立方体边长为:“+c.getLen()+”，表面积为：“+c.getArea(c.getLen())+”，体积为：“+c.getVolume(c.getLen())+”)；}}2.importjava.util.Scanner;publicclassStudent{privateStringstuName;//定义姓名PrivatedoublechineseScore;//定义中文分数PrivatedoublemathScore;//定义数学分数PrivateoublecomputerScore;publicStringgetStuName(){returnstuName;}publicvoidsetStuName(StringstuName){this.stuName=stuName;}publicdoublegetChineseScore(){returnchineseScore;}publicvoidsetChineseScore(doublechineseScore){this.chineseScore=chineseScore;}publicdoublegetMathScore(){returnmathScore;}publicvoidsetMathScore(doublemathScore){this.mathScore=mathScore;}publicdoublegetComputerScore(){returncomputerScore;}publicvoidsetComputerScore(doublecomputerScore){this.computerScore=computerScore;}publicdoubleavg(doublechineseScore,doublemathScore,doublecomputerScore){return(chineseScore+mathScore+computerScore)*1.0/3;}publicstaticvoidmain(String[]args){Studentstu=newStudent();System.out.print("请输入姓名Student:");stu.setStuName(newScanner(System.in).next());System.out.print("请输入学生中文成绩：");stu.setChineseScore(newScanner(System.in).nextDouble());System.out.print("请输入你的数学结果对于学生：");stu.setMathScore(newScanner(System.in).nextDouble());System.out.print("请输入学生的计算机分数：");stu.setComputerScore(newScanner(System.in).nextDouble());System.out.println(stu.getStuName()+"学生平均成绩是"+stu.avg(stu.getChineseScore(),stu.getMathScore(),stu.getComputerScore()));}}