Question

Java的统计每个数字出现的数量从1-1000

Answer 1

包括1000的时候
public class Test001 {
int num1;
int num2;
int num3;
int num4;
int num5;
int num6;
int num7;
int num8;
int num9;
int num0;
private void f(int x){
String str=Integer.valueOf(x).toString();
char[] chars=str.toCharArray();
for(char c:chars){
if(c=='1'){
num1++;
}
else if(c=='2'){
num2++;
}
else if(c=='3'){
num3++;
}
else if(c=='4'){
num4++;
}
else if(c=='5'){
num5++;
}
else if(c=='6'){
num6++;
}
else if(c=='7'){
num7++;
}
else if(c=='8'){
num8++;
}
else if(c=='9'){
num9++;
}
else if(c=='0'){
num0++;
}
}
}
public void g(){
for(int i=1;i<1001;i++){
f(i);
}
System.out.println("1出现"+num1+"次");
System.out.println("2出现"+num2+"次");
System.out.println("3出现"+num3+"次");
System.out.println("4出现"+num4+"次");
System.out.println("5出现"+num5+"次");
System.out.println("6出现"+num6+"次");
System.out.println("7出现"+num7+"次");
System.out.println("8出现"+num8+"次");
System.out.println("9出现"+num9+"次");
System.out.println("0出现"+num0+"次");

}
public static void main(String[] args) {
new Test001().g();
}

}

Answer 2

package Test_4;

public class Apple_6 {
public static void main(String[] args) {
new Test001().g();
}

}
class Test001 {
int num1;
int num2;
int num3;
int num4;
int num5;
int num6;
int num7;
int num8;
int num9;
int num0;
private void f(int x){
String str=Integer.valueOf(x).toString();
char[] chars=str.toCharArray();
for(char c:chars){
if(c=='1'){
num1++;
}
else if(c=='2'){
num2++;
}
else if(c=='3'){
num3++;
}
else if(c=='4'){
num4++;
}
else if(c=='5'){
num5++;
}
else if(c=='6'){
num6++;
}
else if(c=='7'){
num7++;
}
else if(c=='8'){
num8++;
}
else if(c=='9'){
num9++;
}
else if(c=='0'){
num0++;
}
}
}
public void g(){
for(int i=1;i<1001;i++){
f(i);
}
System.out.println("1出现"+num1+"次");
System.out.println("2出现"+num2+"次");
System.out.println("3出现"+num3+"次");
System.out.println("4出现"+num4+"次");
System.out.println("5出现"+num5+"次");
System.out.println("6出现"+num6+"次");
System.out.println("7出现"+num7+"次");
System.out.println("8出现"+num8+"次");
System.out.println("9出现"+num9+"次");
System.out.println("0出现"+num0+"次");

}

}

Answer 3

题目完整吗。。