添加 'B.cpp'

B.cpp

@@ -0,0 +1,19 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int a, b;
+    cin >> a >> b;
+    int out[10] = {0};
+    for(int i = a; i <= b; i++){
+        int t = i;
+        while(t){
+            out[t % 10]++;
+            t /= 10;
+        }
+    }
+    for(int i = 0; i < 10; i++){
+        cout << out[i] << " ";
+    }
+    cout << endl;
+    return 0;
+}