digit count
code
class Solution {
public:
// param k : description of k
// param n : description of n
// return ans a integer
int digitCounts(int k, int n) {
int count = 0;
if (k == 0) {
count = 1;
}
for (int i = 1; i <= n; i++) {
int number = i;
while (number > 0) {
if (number % 10 == k) {
count += 1;
}
number /= 10;
}
}
return count;
}
};