✨ upload 2379th cpp solution

Author: InnoFang

LeetCode/2379. Minimum Recolors to Get K Consecutive Black Blocks/solution.cpp

@@ -0,0 +1,20 @@
+/** 
+ * Runtime: 4 ms
+ * Memory Usage: 6.1 MB 
+ */
+class Solution {
+public:
+ int minimumRecolors(string blocks, int k) {
+ int i = 0, tmp = 0;
+ while (i < k) {
+ tmp += blocks[i++] == 'W';
+ }
+ int ans = tmp;
+ for (; i < blocks.size() ; ++ i) {
+ tmp += blocks[i] == 'W';
+ tmp -= blocks[i - k] == 'W';
+ ans = min(ans, tmp);
+ }
+ return ans;
+ }
+};