Java中如何统计元音的个数并进行排序后输出（要求知道输出字母的顺序）

public char[] total(String text,int[] count){
char[] letters=text.toCharArray();
count[0]=count[1]=count[2]=count[3]=count[4]=0;
for(char ch:letters){
switch(ch){
case 'a':count[0]++;break;
case 'e':count[1]++;break;
case 'i':count[2]++;break;
case 'o':count[3]++;break;
case 'u':count[4]++;break;
}
}
char[] sequence=new char[]{'a','e','i','o','u'};
for(int i=0;i<4;i++){
int m=i;
for(int j=i+1;j<=;j++){
if(count[m]>count[j]){
m=j;
}
}
if(m!=i){
count[m]^=count[i];
count[i]^=count[m];
count[m]^=count[i];
sequence[m]^=sequence[i];
sequence[i]^=sequ