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-rw-r--r--other/num_same_consecutive_diff.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/other/num_same_consecutive_diff.cpp b/other/num_same_consecutive_diff.cpp
new file mode 100644
index 0000000..0602ce1
--- /dev/null
+++ b/other/num_same_consecutive_diff.cpp
@@ -0,0 +1,32 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ vector<int> numsSameConsecDiff(int n, int k) {
+ vector<int> ans;
+ for (int i = 1; i < 10; i++)
+ findNum(i, n, k, ans);
+ return ans;
+ }
+
+private:
+ int digits(int x) {
+ int count = 0;
+ while (x) {
+ count++;
+ x /= 10;
+ }
+ return count;
+ }
+ void findNum(int curr, int n, int k, vector<int> &ans) {
+ if (digits(curr) == n) {
+ ans.push_back(curr);
+ return;
+ }
+ for (int i = 0; i < 10; i++) {
+ int last = curr % 10;
+ if (abs(last - i) == k)
+ findNum((curr * 10 + i), n, k, ans);
+ }
+ }
+};