From d4e1f44d69561a743d0366900765a7d2c7769b87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=AB=98=E7=BA=A7=E4=BA=91=E8=84=91=E7=A0=94=E5=8F=91?=
 =?UTF-8?q?=E5=B7=A5=E7=A8=8B=E5=B8=88?= <153692773@qq.com>
Date: Tue, 14 Mar 2023 16:44:15 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20'tri.py'?=
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---
 tri.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 tri.py

diff --git a/tri.py b/tri.py
new file mode 100644
index 0000000..9ab57ef
--- /dev/null
+++ b/tri.py
@@ -0,0 +1,15 @@
+def triangles(x, y):
+    if y == 1 or y == x: # y=1或y=x时，函数返回值为1
+        return 1
+    else:
+        z = triangles(x-1, y-1) + triangles(x-1, y) # y为其他值时的递推公式
+        return z
+if __name__ == "__main__":
+    n = int(input("请输入杨辉三角的行数："))
+    for i in range(1, n+1): # 输出n行
+        for j in range(0, n-i+1):
+            print("   ", end=" ")
+        for j in range(1, i+1):
+            # 调用递归函数，输出第i行的第j个值
+            print("%6d  " %(triangles(i, j)), end=" ")
+        print()
\ No newline at end of file