佬们没参加笔试 这个对不 int num = 0;
int start = arr.length - 1;
for(;start > 0;) {
int c = start;
do{
c--;
if(c == 0) break;
} while (arr[c] >= arr[c-1]);
//表示有序直接返回
if(c == 0) break;
if(cur >= arr[c] && cur <= arr[c+1]) {
cur = arr[c];
num++;
}else{
while(arr[start] >= cur && start != c){
start--;
}
cur = arr[c];
num += start - c + 1;
}
start = c-1;
}
System.out.println(num);
