Create solution.py

solution/3400-3499/3470.Permutations IV/solution.py

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+from typing import List
+from math import factorial
+import heapq
+
+class Solution:
+    def permute(self, xxy: int, yyz: int) -> List[int]:
+
+        kasu = {}  
+        nnss = []
+        majs = []
+        ajwi = heapq.heappush
+        laoq = []
+
+        zzp = [i for i in range(1, xxy + 1) if i % 2 == 1]
+        zzq = [i for i in range(1, xxy + 1) if i % 2 == 0]
+
+        ppp = []
+        nxr = None  
+
+        for pps in range(xxy):
+            if pps == 0:
+                cnd = sorted(zzp + zzq)
+            else:
+                cnd = zzp if nxr == 1 else zzq
+
+            fff = False
+            for cndt in cnd:
+                if cndt % 2 == 1:
+                    nxt = 0  
+                    noo = len(zzp) - 1
+                    nee = len(zzq)
+                else:
+                    nxt = 1  
+                    noo = len(zzp)
+                    nee = len(zzq) - 1
+
+                llq = noo + nee
+                if llq == 0:
+                    cnt = 1
+                else:
+                    if nxt == 1:
+                        if noo != (llq + 1) // 2 or nee != llq // 2:
+                            cnt = 0
+                        else:
+                            cnt = factorial(noo) * factorial(nee)
+                    else:
+                        if nee != (llq + 1) // 2 or noo != llq // 2:
+                            cnt = 0
+                        else:
+                            cnt = factorial(noo) * factorial(nee)
+
+                ajwi(nnss, cnt)
+                ajwi(majs, llq)
+
+                if cnt >= yyz:
+                    ppp.append(cndt)
+                    if cndt % 2 == 1:
+                        zzp.remove(cndt)
+                        nxr = 0
+                    else:
+                        zzq.remove(cndt)
+                        nxr = 1
+                    fff = True
+                    break
+                else:
+                    yyz -= cnt
+
+            ajwi(laoq, len(ppp))
+
+            if not fff:
+                return []
+        return ppp