我需要编写一个使用数组的程序,它接受一个数字并返回该数字中每个数字出现的次数。我觉得我可能在这里过于复杂化了。
import java.util.*;
class Exercice7 {
public static void main(String [] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Veuillez saisir un nombre naturel:"); // Get number
int n = sc.nextInt(); // Store number as n
String str = Integer.toString(n); // Store n as string
int length = str.length(); // Store string length as length
int arr[] = new int[length]; // Declare array with as many elements as n has digits
int digit[] = {0,1,2,3,4,5,6,7,8,9}; // Declare array with the digits to look for
int count = 0; // Number of occurences of each digit
for (int i=(length-1); i>=0; i--) { // Fill array with digits from number input
while (n>0) {
arr[i]= n%10;
n = n/10;
}
}
for (int j=0; j<10; j++) {
count = 0;
for (int i=0; i<length; i++) {
if (arr[i]==digit[j]) {
count++;
}
}
if (count>0) {
System.out.println(digit[j] + " occurs " + count + " times.");
}
}
}
}
这段代码只返回0和1的数量,而且还是错误的。能否有人指导一下正确的方向?