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1051
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class Solution {
public:
// vector<int> counting(vector<int>&arr){
// int n=arr.size();
// vector<int>brr(n,0);
// int mx = *max_element(arr.begin(), arr.end());
// vector<int> crr(mx + 1,0);
// for (int i = 0; i < n; i++) {
// crr[arr[i]]++;
// }
// for(int i=0;i<mx;i++){
// crr[i+1]+=crr[i];
// }
// int val = mx;
// for (int i = n - 1; i >= 0; i--) {
// brr[crr[arr[i]]-1]=arr[i];
// crr[arr[i]]--;
// }
// return brr;
// }
int heightChecker(vector<int>& h) {
vector<int>b=h;
sort(b.begin(),b.end());
int c=0;
for(int i=0;i<b.size();i++){
if(h[i]!=b[i])
c++;
}
return c;
}
};