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-rw-r--r--check_string_cont_k.cpp30
1 files changed, 30 insertions, 0 deletions
diff --git a/check_string_cont_k.cpp b/check_string_cont_k.cpp
new file mode 100644
index 0000000..e041052
--- /dev/null
+++ b/check_string_cont_k.cpp
@@ -0,0 +1,30 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ bool hasAllCodes(string s, int k) {
+ int bitLimit = 1 << k, n = 0;
+ bool combos[bitLimit];
+ for (int i = 0; i < bitLimit; i++)
+ combos[i] = true;
+ for (int i = 0, limit = k - 1; i < limit; i++)
+ n = (n << 1) + (s[i] == '1');
+ for (int i = k - 1, limit = s.size(), total = bitLimit; i < limit; i++) {
+ n = (n << 1) + (s[i] == '1');
+ if (n >= bitLimit)
+ n -= bitLimit;
+ if (combos[n])
+ combos[n] = false, total--;
+ if (!total)
+ return true;
+ }
+ return false;
+ }
+};
+
+int main() {
+ Solution obj;
+ string s = "00110110";
+ int k = 2;
+ cout << obj.hasAllCodes(s, k);
+}