finish all analysis

2026-04-20 00:36:28 +09:00
parent 009bf59ff0
commit 31219c4618
26 changed files with 1130 additions and 483 deletions
@@ -94,6 +94,8 @@ class FiboHeap:
    def extract_min(self):
        # 1. Find min node
        min_node = self.min
+        if min_node is None:
+            return None
        self.n -= 1

        # 2. Make min node's child into individual tree