java分数代码 java学生成绩代码

如何用java编写一个,手动输入10个分数,去掉一个最高分,去掉一个最低分,并把剩余的数求平均值的的

输出结果图:

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参考代码如下:

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Scanner;

public class xxx {

public static void main(String[] args) {

System.out.println("请输入10个数字,以逗号隔开:");

Scanner scanner=new Scanner(System.in);

String input=scanner.next();

//将输入的数字按照","分割成数组

String[] numStrs=input.split(",");

ListInteger nums=new ArrayListInteger();

//将数组的数字放入集合list中方便排序和取出最大最小数

for (int i = 0; i  numStrs.length; i++) {

nums.add(Integer.parseInt(numStrs[i]));

}

Collections.sort(nums);

System.out.println("从小往大排序后:"+nums);

nums.remove(0);

nums.remove(nums.size()-1);

System.out.println("去掉最小数和最大数后:"+nums);

double avg=0d;

int sum=0;

//求出剩下数字的总和

for (int i = 0; i  nums.size(); i++) {

sum+=nums.get(i);

}

//求平均值(总和/剩下数字的个数)

avg=sum/(nums.size());

System.out.println("["+nums+"]的平均数为:"+avg);

}

}

JAVA代码问题!输入5名学生的成绩,并计算总成绩,平均分,最高分,最低分

public static void main(String[] args) {

double scores[] = new double[5];

double total = 0;

double avg = 0;

double max = 0;

double min = 0;

int count=0;

String inputStr=null;

System.out.println("请输入5名学生的成绩:");

Scanner input = new Scanner(System.in);

while(count5){

try{

if(count 5){

System.out.println("请输入第"+(count+1)+"个分数:");

}

inputStr=input.nextLine();

scores[count++]=Double.valueOf(inputStr.trim());

}catch(Exception e){

if(inputStr!=null "exit".equals(inputStr.trim())){

System.out.println("您已成功结束程序");

System.exit(0);

}

System.out.println("若想结束请输入:exit");

System.out.print("您输入的分数不是数值类型,");

count--;

}

}

input.close();

Arrays.sort(scores);

min=scores[0];

max=scores[scores.length-1];

for(double score :scores){

total += score;

}

avg=total/scores.length;

System.out.println("总成绩是" + total);

System.out.println("最高分是" + max);

System.out.println("最低分是" + min);

System.out.println("平均分是" + avg);

}

//-------------------------------------------------------------------------

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

while(true){

Double[] scores = null;

double total = 0;

double avg = 0;

double max = 0;

double min = 0;

int count=1;

ListDouble inputScores=new ArrayListDouble();

String inputStr=null;

System.out.println("请输入要统计学生的成绩(理论上可以输入无限个,前提是你有那么大的内存):");

while(true){

try{

System.out.println("请输入第"+count+++"个分数,或输入ok进行计算,离开请输入exit");

inputStr=input.nextLine();

inputScores.add((double)Double.valueOf(inputStr.trim()));

}catch(Exception e){

if(inputStr!=null "exit".equals(inputStr.trim().toLowerCase())){

System.out.println("您已成功结束程序");

input.close();

System.exit(0);

}

if(inputStr!=null "ok".equals(inputStr.trim().toLowerCase())){

break;

}

System.out.println("您输入的分数不是数值类型,");

System.out.println("若想结束请输入exit ,若想计算结果请输入ok");

count--;

}

}

if(inputScores.size()==0){

System.out.println("您没有输入学生成绩,无数据可统计,程序结束。");

return ;

}

scores=inputScores.toArray(new Double[inputScores.size()]);

Arrays.sort(scores);

min=scores[0];

max=scores[scores.length-1];

for(double score :scores){

total += score;

}

avg=total/scores.length;

System.out.println("总成绩是" + total);

System.out.println("最高分是" + max);

System.out.println("最低分是" + min);

System.out.println("平均分是" + avg);

}

}

用java怎么写分数?

你可以写个分数类,下面是参考:

public class Fraction {

private Integer numerator; // 分子;

private Integer denominator; // 分母

/**

* 构造器

*/

public Fraction() {

}

public Fraction(Integer numerator, Integer denominator) {

this.numerator = numerator;

this.denominator = denominator;

}

public Integer getDenominator() {

return denominator;

}

public void setDenominator(Integer denominator) {

this.denominator = denominator;

}

public Integer getNumerator() {

return numerator;

}

public void setNumerator(Integer numerator) {

this.numerator = numerator;

}

/**

* 求最大公约数

*

* @return

*/

private int getGCD(int a, int b) {

int max = Math.max(a, b);

int min = Math.min(a, b);

int mod = max % min;

if (mod == 0) {

return min;

} else {

return this.getGCD(mod, min);

}

}

/**

* 简化和约分

*

* @return

*/

public Fraction simplify() {

// 格式化

if (this.numerator == 0) {

this.denominator = null;

return this;

} else if (this.denominator * this.numerator 0

this.denominator 0) {

this.denominator = Math.abs(this.denominator);

this.numerator = Math.abs(this.numerator);

return this;

} else if (this.denominator 0) {

this.denominator = Math.abs(this.denominator);

this.numerator = -this.numerator;

return this;

}

// 约分

int gcd = this.getGCD(Math.abs(denominator), Math.abs(numerator));

if (gcd == 1) {

return this;

} else {

this.denominator = this.denominator / gcd;

this.numerator = this.numerator / gcd;

return this;

}

}

/**

* 加法

*

* @param fraction

* @return

*/

public Fraction add(Fraction fraction) {

Integer resultDenominator = Math.abs(this.denominator)

* Math.abs(fraction.getDenominator());

Integer resultNumerator = this.numerator * fraction.getDenominator()

+ this.denominator * fraction.getNumerator();

Fraction result = new Fraction(resultNumerator, resultDenominator);

return result.simplify();

}

/**

* 减法

*

* @param fraction

* @return

*/

public Fraction minus(Fraction fraction) {

Integer resultDenominator = Math.abs(this.denominator)

* Math.abs(fraction.getDenominator());

Integer resultNumerator = this.numerator * fraction.getDenominator()

- this.denominator * fraction.getNumerator();

Fraction result = new Fraction(resultNumerator, resultDenominator);

return result.simplify();

}

/**

* 乘法

*

* @param fraction

* @return

*/

public Fraction multiply(Fraction fraction) {

Fraction result = null;

if (this.numerator == 0 || fraction.numerator == 0) {

result = new Fraction(0, null);

}

Integer resultDenominator = this.denominator

* fraction.getDenominator();

Integer resultNumerator = this.numerator * fraction.getNumerator();

result = new Fraction(resultNumerator, resultDenominator);

return result.simplify();

}

/**

*除法

*

* @param fraction

* @return

*/

public Fraction divide(Fraction fraction) {

Fraction result = null;

if (this.numerator == 0) {

result = new Fraction(0, null);

}

Integer resultDenominator = this.denominator * fraction.getNumerator();

Integer resultNumerator = this.numerator * fraction.getDenominator();

result = new Fraction(resultNumerator, resultDenominator);

return result.simplify();

}

@Override

public String toString() {

return "[分子]" + this.numerator + "-[分母]" + this.denominator;

}

/**

* 测试

*

* @param args

*/

public static void main(String[] args) {

Fraction f1 = new Fraction(1, 2);

Fraction f2 = new Fraction(2, 4);

System.out.println(f1);

System.out.println(f2);

System.out.println(f2.simplify());

System.out.println(f1.add(f2));

System.out.println(f1.minus(f2));

System.out.println(f1.multiply(f2));

System.out.println(f1.divide(f2));

}

}

Java代码写一个分数排序,同分同名

ListInteger list = new ArrayList();

list.add(100);

list.add(100);

list.add(92);

list.add(90);

list.add(90);

list.add(80);

list.add(10);

for (Integer i : list) {

long count = list.stream().filter(integer - integer i).count() + 1;

System.out.println("分数:" + i + " 名次:" + count);

}

用Java语言编写一个代码,输入几个评委分数,去掉一个最大和最小取平均值,

package com.test;

import java.io.InputStream;

import java.util.Scanner;

public class Test {

int[] nums = new int[5]; //评委分数数组

int avg; //平均分

int num=0;  //输入的值

int num2=0; //冒泡用的

int num3=0; //冒泡用的

int sun=0; //总分

Scanner input = new Scanner(System.in);

public void test(){

for(int i=0;i5;i++){ // 输入5个评委分

System.out.println("请评委输入分数:");

num = input.nextInt();

if(num0  num=10){

nums[i]=num;

}else{

System.out.println("分数只能在0-10之间");

i--;

continue;

}

}

for(int i=0;inums.length;i++){

sun=sun+nums[i];

}

for(int i = 0; inums.length-1 ;i++){

 if(nums[i]  nums[i+1]){

 num2 = nums[i];

 nums[i]=nums[i+1];

 nums[i+1]=num2;

 }

}

for(int i = 1; inums.length-1 ;i++){

 if(nums[i]  nums[i+1]){

 num3 = nums[i];

 nums[i]=nums[i+1];

 nums[i+1]=num2;

 }

}

avg=(sun-nums[0]-nums[1])/3;

System.out.println("平均分为:"+avg);

}

public static void main(String[] args) {

Test tt = new Test();

tt.test();

}

}


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