java编程题,输入一段英文文章,单词之间都已经用空格分隔,本人想以每5个单词为一行输出,怎么写?请指教

import java.util.Scanner;

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public class SplitWords {

public static void main(String[] args) {

System.out.println("Please input some english words, separate with ',' or SPACE ");

Scanner scanner = new Scanner(System.in);

String input = scanner.nextLine();

String[] words = input.replace(',', ' ').replace('.', ' ').split("\\s+");

System.out.println("Total " + words.length + " separate word in " + input);

System.out.println("Words with 4 characters are as follows: ");

int count = 0;

for(String str: words){

if(count == 5){

System.out.println();

count = 0;

}

if(str.length() == 4){

System.out.print(str + "\t");

count++;

}

}

}

}

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Please input some english words, separate with ',' or SPACE

Today is Christmas Day, we people in china don't celebrate it. I like china very much.

Total 16 separate word in Today is Christmas Day, we people in china don't celebrate it. I like china very much.

Words with 4 characters are as follows:

like very much

java分段函数

按照你的要求编写的分段函数的Java程序如下

import java.util.Scanner;

public class Segment {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

double x=sc.nextDouble();

double y;

if(x-5){

y=3*x*x+2*x-1;

}else if(x=-5  x=5){

y=x*Math.sin(x)+Math.pow(2,x);

}else{

y=Math.sqrt(x-5)+Math.log10(x);

}

System.out.println("y="+y);

}

}

运行结果

输入 6

输出 y=1.7781512503836436

用myeclipse将英文按照空格切分 用java做，将英文按照空格切分，并且抽出of，and等词

参考代码如下

import java.util.ArrayList;

public class EnDemo {

public static void main(String[] args) {

ArrayListString preps = new ArrayListString();//用于保存不需要的介词of and等

preps.add("in");

preps.add("and");

preps.add("of");

String str = "Lucy and Lily in the class The day of week is Monday";//一句英语

String[] ss = str.trim().split("\\s+");//按照1个 或者多个空格切分

ArrayListString result = new ArrayListString();//用于保存踢掉分词后的结果

for (int i = 0; i  ss.length; i++) {

String temp = ss[i];

if(preps.contains(temp)){//如果是介词.那么继续下次循环

continue;

}else{

result.add(temp);//不是介词 就添加进来

}

}

for (String w : result) {

System.out.print(w+" ");

}

}

}

求大神指导用Java编程求分段函数（要求用if…else语句实现）

运行结果：

代码如下：

import java.util.Scanner;

public class App65 {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("请输入x值：");

int x = scanner.nextInt();

int y = 0;

if (x  0) {

y = x * x;

} else if (x = 0  x  10) {

y = 2 * x - 1;

} else if (x = 10) {

y = 3 * x - 11;

}

System.out.println("y=" + y);

}

}

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