题目一:
1. 写一个Java程序,用于分析一个字符串中各个单词出现的频率,并将单词和它出现的频率输出显示。(单词之间用空格隔开,如“Hello World My First Unit Test”);
2. 编写单元测试进行测试;
3. 用ElcEmma查看代码覆盖率,要求覆盖率达到100%。
package cn.he.mju;
import java.util.*;
public class Action {
public void findWord(String str){
String[] arrayWord =str.split(" ");
Action a = new Action();
a
.frequency(arrayWord);
}
public void frequency(String[] arrayWord){
String[] word = new String[arrayWord.length];
int time[]=new int[arrayWord.length];
boolean t = true;
for(int i=0;i<arrayWord.length;i++){
for(int j=0;j<arrayWord.length;j++){ if(arrayWord[i].equals(word[j])){
System.out.println("单词重复!!!");
t=false; }
}
if(t==true){
word[i]=arrayWord[i];
time[i]=1;
for(int j=i+1;j<arrayWord.length;j++){ if(arrayWord[i].equals(arrayWord[j])){
time[i]++;
}
}
}
}
for(int i = 0;i<arrayWord.length;i++){ if(word[i]!=null){
System.out.println("单词:"+word[i]+"出现了"+time[i]+"次。");
}
}
}
}
package cn.he.mju;
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
View v = new View();
}
}
package cn.he.mju;
import java.util.Scanner;
public class View {
public View(){
Scanner input =new Scanner(System.in);
System.out.println("请输入字符串,单词用空格隔开,回车结束:");
String str=input.nextLine();
Action a = new Action();
a.findWord(str);
}
}
题目二:
1.写一个Java程序,把一个英语句子中的单词次序颠倒后输出。例如输入“how are you”,输出“you are how”;
2.编写单元测试进行测试;
3.用ElcEmma查看代码覆盖率,要求覆盖率达到100%
package cn.he.mju;
import java.util.Scanner;
public class Main {
public static void main (String[] args){
Main a = new Main();
a.View();
}
public void findWord(String str){
String[] arrayWord =str.split(" ");
for(int i=arrayWord.length-1;i>=0;i--){
System.out.print(arrayWord[i]+" ");
}
}
public void View(){
Scanner input =new Scanner(System.in);
System.out.println("请输入字符串,单词用空格隔开,回车结束:");
String str=input.nextLine();
Main a = new Main();
a.findWord(str);
}
}