do daily

Author: Zanger67

my-submissions/e2379.py

@@ -0,0 +1,7 @@
+class Solution:
+    def minimumRecolors(self, blocks: str, k: int) -> int:
+        output = w = blocks[:k].count('W')
+        for l, r in zip(blocks, blocks[k:]) :
+            w += (r == 'W') - (l == 'W')
+            output = min(output, w)
+        return output