[Silver V] Title: ABB to BA (Easy), Time: 56 ms, Memory: 32412 KB -BaekjoonHub

백준/Silver/32292. ABB to BA （Easy）/ABB to BA （Easy）.py

@@ -0,0 +1,13 @@
+t = int(input())
+for _ in range(t):
+    n = int(input())
+    s = list(input())
+    i = 0
+    while i <= len(s) - 3:
+        if s[i] == 'A' and s[i + 1] == 'B' and s[i + 2] == 'B':
+            s[i], s[i + 1] = 'B', 'A'
+            s.pop(i + 2)
+            i = max(i - 2, 0)
+        else:
+            i += 1
+    print(''.join(s))