Class A class is a blueprint from which specific objects are created. Classes allow us to logically group our data and function to reuse and way to build upon if we need to be. Object Objects are instances of the class. The class allows grouping the data (Name, age, and salary). …

Enumerate in python Enumerate add an iterable counter and return enumerate object. Enumerate objects can be directly used in for loop or convert into the list of tuples using the list() method. some_string = "python" some_dict = {} print("Convert it into list") print(list(enumerate(some_string))) for i, some_dict[i] in enumerate(some_string): pass print("Dict") print(some_dict) The output Convert it into list [(0, 'p'), (1, 'y'), (2, 't'), (3, 'h'), (4, 'o'), (5, 'n')]

“show system process extensive” is the CLI command in Junos which shows the running process in the device and its CPU and memory usages of each process. root> show system processes extensive last pid: 26688; load averages: 0.81, 0.95, 0.87 up 1+09:50:29 07:16:56 448 threads: 10 running, 397 sleeping, 41…

Given an integer x, return true if x is palindrome integer. An integer is a palindrome when it reads the same backward as forward. For example, 121 is palindrome while 123 is not. Example 1: Input: x = 121 Output: true Example 2: Input: x = -121 Output: false Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome. Program class Solution: def isPalindrome(self, x: int) -> bool: if x > 0: a = int(str(x)[::-1]) if x <= 0: a = int(str(x*-1)[::-1]) if a == x: return True else: return False

Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-231, 231 - 1], then return 0. Assume the environment does not allow you to store 64-bit integers (signed or unsigned). Example 1: Input: x = 123 Output: 321 Example 2: Input: x = -123 Output: -321 Program: class Solution(object): def reverse(self, x): flag = 0 list1 =[] if x < 0: flag = 1 list1[:0]= str(abs(x)) result = int("".join(list1[::-1])) if flag == 1: result = result * -1 if result > 2**31 - 1 or result <= -2**31: return 0 else: return(result)

Facts of unique pointer The unique pointer doesn’t share its memory. It can’t be copied to another unique by using an assignment operator. The ownership can be moved from one to another. “unique ptr” wants to limit the ownership of the object. Program #include <iostream> #include <memory> using namespace std; class Demo { public: Demo() { printf("Constructor called\n"); } void fun() { printf("Function calling\n"); } ~Demo() { printf("Destructor called\n"); } };

In c++, we can’t assign the address of a variable of one data type to a pointer of another data type. In such a case, use a void pointer or generic pointer. Facts: malloc() and calloc() returns void * type and allow this function to be used to allocate memory of any data type. void pointers are used to implement a generic function in c. void pointer can’t be dereferenced. int main() { int a = 10; void *ptr = &a; printf("%d", *ptr); }

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You can return the answer in any order. Example 1: Input: nums = [2,7,11,15], target = 9 Output: [0,1] Output: Because nums[0] + nums[1] == 9, we return [0, 1]. Example 2:

What is Docker? The leading container platform that allows you to wrap your app, all of its dependencies, and library into a small executable bundle that can be run anywhere. What is Ansible? Ansible is an open-source DevOps tool that can help the business in configuration management, deployment, provisioning, etc…