charactermap.java

一些Java的小的应用程序

/***字母柱状图*/
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class CharacterMap {
	public static void main(String args[]){
		try{BufferedReader input=new BufferedReader
			(new InputStreamReader(System.in));
		System.out.println("Now we will make a table:");
		int[]num=new int[26];
		int amount=0;
		for(int i=0;i<26;i++){
			System.out.print ("Enter the numbers of "+(char)('a'+i)+"  ");
			num[i]=Integer.parseInt(input.readLine());
			amount+=num[i];
		}double[] percent=new double[26];
		for(int i=0;i<26;i++)
			percent[i]=Math.round(num[i]*100.0/amount);
for(int i=0;i<10;i++)
	System.out.print((i+1)*10+"%\t");
System.out.println();
for(int i=0;i<10;i++)
	System.out.print("|\t");
System.out.println();
for(int i=0;i<10;i++)
	System.out.print("********");
System.out.println();
for(int i=0;i<26;i++){
	for(int j=0;j<percent[i];j++)
		System.out.print("*");
	System.out.println("  "+(char)('a'+i));
}
}catch(Exception e){
	System.out.println("ERROR!");
}}}