add practice

Author: clingoram

python/index.py

@@ -267,7 +267,8 @@ def replaceDigits(s: str) -> str:
 # Output: "abcdef"
 # print(replaceDigits(s))
 
-
-a = [12,6,3]
-b = map(str,a)
-print(list(b))
+def startswith(w):
+  return w.startswith("a")
+li = ['apple','orange','pineapple','grape']
+res = filter(startswith,li)
+print(list(res))

python/leetcode/math/1925:.py

@@ -0,0 +1,30 @@
+from math import sqrt
+class So:
+  '''
+  So 的 Docstring
+ 
+  '''
+  def countTriples(self, n: int) -> int:
+    '''
+    1925. Count Square Sum Triples
+
+    triple = a 二次方 + b 二次方 = c 二次方
+
+    :param self: 說明
+    :param n: 數值n
+    :type n: int
+    :return: 說明
+    :rtype: int
+    '''
+    ans = 0
+    for a in range(1,n + 1):
+      for b in range(1,n + 1):
+        pairs = int(sqrt(a**2 + b**2 + 1))
+        if pairs <= n and pairs **2 == a**2 + b**2:
+          ans += 1
+    return ans
+
+ans = So()
+n = 5
+# 2
+print(ans.countTriples(n))