Z变换

hw1/Zconvert.py

 def convert(s, numRows):
-    """
-    :type s: str
-    :type numRows: int
-    :rtype: str
-    """
\ No newline at end of file
+    # 初始化数组
+    rows = [''] * numRows
+    index = 0
+    isInc = True
+    for char in s:
+        if index == 0:
+            isInc = True
+        elif index + 1 == numRows:
+            isInc = False
+        offset = 1 if isInc else - 1
+        rows[index] = rows[index] + char
+        index = index + offset
+
+    str = ''
+    for row in rows:
+        str = str + row
+
+    print(str)
+
+
+str = "0123456789"
+str = "LEETCODEISHIRING"
+
+convert(str, 3)
+convert(str, 4)
+