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-rw-r--r--other/min_window_substring.cpp37
1 files changed, 37 insertions, 0 deletions
diff --git a/other/min_window_substring.cpp b/other/min_window_substring.cpp
new file mode 100644
index 0000000..c529687
--- /dev/null
+++ b/other/min_window_substring.cpp
@@ -0,0 +1,37 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ string minWindow(string s, string t) {
+ unordered_map<char, int> m1, m2;
+ int check = INT_MAX;
+ string ans;
+ for (char &ch : t)
+ m1[ch]++;
+ int slow = 0, fast = 0, count = 0;
+ for (; fast < s.size(); fast++) {
+ char c = s[fast];
+ if (m1.find(c) != m1.end()) {
+ m2[c]++;
+ if (m2[c] <= m1[c])
+ count++;
+ }
+ if (count >= t.size()) {
+ while (m1.find(s[slow]) == m1.end() || m2[s[slow]] > m1[s[slow]]) {
+ m2[s[slow]]--;
+ slow++;
+ }
+ if (fast - slow + 1 < check) {
+ check = fast - slow + 1;
+ ans = s.substr(slow, check);
+ }
+ }
+ }
+ return ans;
+ }
+};
+
+int main() {
+ Solution obj;
+ cout << obj.minWindow("ADOBECODEBANC", "ABC");
+}