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Python OOPs Concepts
Object Oriented Programming is a fundamental concept in Python, empowering developers to build modular, maintainable, and scalable applications. By understanding the core OOP principles—classes, objects,… Read More
python-oop-concepts
Python
Zombie and Orphan Processes in C
Prerequisite: fork() in C Zombie Process: A process which has finished the execution but still has entry in the process table to report to its… Read More
CPP-Library
system-programming
C Language
C++
Puzzle -58 | Friends after ages
Two old friends, Jacky and Bob, meet after a long time. Jacky: Hey, how are you man? Bob: Not bad, got married and I have… Read More
Analytical Mathematical Puzzles
Puzzles
Sets in Python
A Set in Python programming is an unordered collection data type that is iterable, mutable and has no duplicate elements.  Set are represented by {… Read More
python-set
Python
How to use Function Decorators in Python ?
In Python, a function can be passed as a parameter to another function (a function can also return another function). we can define a function… Read More
Python Decorators
Python
Aptitude | Simplification and Approximation | Question 8
(A) 141/12 (B) 131/12 (C) 121/12 (D) 111/12 Answer: (C) Explanation: Quiz of this QuestionPlease comment below if you find anything wrong in the above… Read More
Aptitude
Aptitude-Simplification and Approximation
Simplification and Approximation
Aptitude
QA – Placement Quizzes | Time Speed Distance | Question 14
A boy takes 5 hours 45 min to walk from home to school come back by auto. He would have gained 2 hours by taking… Read More
QA - Placement Quizzes
QA - Placement Quizzes-Time Speed Distance
Time Speed Distance
QA – Placement Quizzes
QA – Placement Quizzes | Time Speed Distance | Question 11
A car completes a journey in 10 hrs, the first half at 11 kmph and the second half at 14kmph. Find the total distance covered?… Read More
QA - Placement Quizzes
QA - Placement Quizzes-Time Speed Distance
Time Speed Distance
QA – Placement Quizzes
QA – Placement Quizzes | Mixtures and Alligation | Question 7
Two solutions S1 and S2 contain whisky and soda in the ratio 2 : 5 and 6 : 7 respectively. In what ratio these solutions… Read More
Mixtures and Alligation
QA - Placement Quizzes
QA - Placement Quizzes-Mixtures and Alligation
QA – Placement Quizzes
QA – Placement Quizzes | Mixtures and Alligation | Question 4
Rice of rate Rs. 126 per kg and Rs. 135 per kg and 3rd variety in the ratio 1 : 1 : 2. If the… Read More
Mixtures and Alligation
QA - Placement Quizzes
QA - Placement Quizzes-Mixtures and Alligation
QA – Placement Quizzes
QA – Placement Quizzes | Age | Question 15
Ram and Shyam’s ages are in the ratio between 4:3. After 6 Years age of Ram will be 26 years. What is present age of… Read More
Age
QA - Placement Quizzes
QA - Placement Quizzes-Age
QA – Placement Quizzes
QA – Placement Quizzes | Profit and Loss | Question 14
A fruit seller sells all his bananas at the cost price but gives 15% less bananas as he should give. Find his profit percentage? (A)… Read More
Profit and Loss
QA - Placement Quizzes
QA - Placement Quizzes-Profit and Loss
QA – Placement Quizzes
QA – Placement Quizzes | Profit and Loss | Question 12
If cost price of 15 pen is equal to Selling price of 20 pens, what is the gain or loss percent? (A) 25% Loss (B)… Read More
Profit and Loss
QA - Placement Quizzes
QA - Placement Quizzes-Profit and Loss
QA – Placement Quizzes
QA – Placement Quizzes | Percentages | Question 9
Ram spends 20% of is salary on food, 15 % of remaining on cloths, and 400 on entertainment. If his salary is 10000, how much… Read More
Percentages
QA - Placement Quizzes
QA - Placement Quizzes-Percentages
QA – Placement Quizzes
OpenCV C++ Program to blur a Video
The following is the explanation to the C++ code to blur a video in C++ using the tool OpenCV. Things to know: (1) The code will… Read More
OpenCV
C++
Project
StringBuffer class in Java
StringBuffer is a class in Java that represents a mutable sequence of characters. It provides an alternative to the immutable String class, allowing you to… Read More
Java-lang package
java-StringBuffer
Java-Strings
Java
Sort linked list which is already sorted on absolute values
Given a linked list that is sorted based on absolute values. Sort the list based on actual values. Examples:   Input : 1 -> -10 output:… Read More
Amazon
Insertion Sort
Linked-List-Sorting
Merge Sort
DSA
Linked List
A Number Link Game
The Game : Consider an n × n array of squares. Some of the squares are empty, some are solid, and some non-solid squares are… Read More
Project
Number of ways to traverse an N-ary tree
Given an n-ary tree, count the number of ways to traverse an n-ary (or a Directed Acyclic Graph) tree starting from the root vertex Example:… Read More
n-ary-tree
DSA
Tree
Common elements in all rows of a given matrix
Given an m x n matrix, find all common elements present in all rows in O(mn) time and one traversal of matrix. Example:  Input: mat[4][5]… Read More
DSA
Hash
Matrix
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