python code practice(四):树、图 1、平衡二叉树 给定一个二叉树,判断它是否是高度平衡的二叉树。 本题中,一棵高度平衡二叉树定义为: 一个二叉树每个节点 的左右两个子树的高度差的绝对值不超过1。 示例1: 给定二叉树 [3,9,20,null,null,15,7] 3 / \ 9 20 / \ 15 7 返回true 。 示例2: 给定...
defmatch(self, s, pattern):#write code here#如果两者都为空,则匹配成功if(len(s) == 0andlen(pattern) ==0):returnTrue#如果模式为空,字符串不为空,则匹配不成功if(len(s) > 0andlen(pattern) ==0):returnFalseiflen(pattern) > 1andpattern[1] =='*':ifsand(pattern[0] =='.'ors[0] ...
Numpy Interview Questions 1. How will you reverse the numpy array using one line of code? This can be done as shown in the following: reversed_array = arr[::-1] where arr = original given array, reverse_array is the resultant after reversing all elements in the input. 2. How will ...
Copy Code Run Code 1 2 3 4 5 6 tuple1 = ("a", "b", "c", "d") # modifying element: tuple1[2] = "g" # Should give an error # tuple object does not support item assignment. Are you ready for your interview? Take a quick Quiz to check it out Take a Quiz 5. What...
In this tutorial, you'll prepare for future interviews by working through a set of Python practice problems that commonly appear in coding tests. You'll work through the problems yourself and then compare your results with solutions developed by the Real
Virtual environments are a great Python feature that allows you to create separate environments for running different Python code on the same machine. In practice, a virtual environment is just a directory tree that contains a Python installation and some other additional packages. Think of a ty...
Do Timed Tests and Practice Whiteboard Coding On-site interviews at FAANG+ companies can sometimes test your ability to code on a whiteboard. The idea behind this is that it makes it possible for recruiters to gauge your thought process and problem-solving approach and consequently make a hiring...
Online Coding Practice with online compiler on Python, Java, PHP, Javascript, SQL, Html, Go and many more. | CodePractice
Using a pair of parentheses to split a long line into multiple lines is a common formatting practice in Python code. However, in the context of an assert statement, the parentheses turn the assertion expression and message into a two-item tuple....
The use of global variables should be minimized in favor of local variables, as global variables can lead to unexpected behavior and make it harder to understand and debug code. It’s generally a good practice to use local variables within functions, and to pass any necessary values as argumen...