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This GitHub repository contents javascript Questions and answers.
Link: 👉🏻 https://github.com/lydiahallie/javascript-questions

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:- Data structure | Algorithm Question -:

🚀Array

1. Find pair with given sum in the array
2. Check if subarray with 0 sum is exists or not
3. Print all sub-arrays with 0 sum
4. Sort binary array in linear time
5. Find a duplicate element in a limited range array
6. Find maximum length sub-array having given sum
7. Find maximum length sub-array having equal number of 0’s and 1’s
8. Find maximum product of two integers in an array
9. Sort an array containing 0’s, 1’s and 2’s (Dutch National Flag Problem)
10. In place merge two sorted arrays
11. Merge two arrays by satisfying given constraints
12. Find index of 0 to replace to get maximum length sequence of continuous ones
13. Shuffle a given array of elements (Fisher–Yates shuffle)
14. Rearrange the array with alternate high and low elements
15. Find equilibrium index of an array
16. Find largest sub-array formed by consecutive integers
17. Find majority element (Boyer–Moore Majority Vote Algorithm)
18. Move all zeros present in the array to the end
19. Replace each element of array with product of every other element without using / operator
20. Find Longest Bitonic Subarray in an array
21. Longest Increasing Subsequence
22. Find maximum difference between two elements in the array by satisfying given constraints
23. Maximum Sum Subarray Problem (Kadane’s Algorithm)
24. Print continuous subarray with maximum sum
25. Maximum Sum Circular Subarray
26. Find all distinct combinations of given length — I
27. Find all distinct combinations of given length with repetition allowed
28. Find maximum sequence of continuous 1’s formed by replacing at-most k zeroes by ones
29. Find minimum sum subarray of given size k
30. Find maximum product subarray in a given array
31. Find subarray having given sum in given array of integers
32. Find the length of smallest subarray whose sum of elements is greater than the given number
33. Find largest number possible from set of given numbers
34. Find the smallest window in array sorting which will make the entire array sorted
35. Find maximum sum path involving elements of given arrays
36. Maximum profit earned by buying and selling shares any number of times
37. Trapping Rain Water within given set of bars
38. Find minimum platforms needed in the station so to avoid any delay in arrival of any train
39. Decode the array constructed from another array
40. Sort an array using one swap
41. Find Triplet with given sum in an array
42. Length of longest continuous sequence with same sum in given binary arrays
43. Reverse every consecutive m elements of the given subarray
44. Maximum Product Subset Problem
45. Find pairs with given difference k in the array
46. Find pairs with given difference k in the array | Constant space solution
47. 4 sum problem | Quadruplets with given sum
48. Print all quadruplets with given sum | 4-sum problem extended
49. Quickselect Algorithm
50. Rearrange array such that A[A[i]] is set to i for every element A[i]
51. Print all Triplets that forms Arithmetic Progression
52. Print all Triplets that forms Geometric Progression
53. Print all combination of numbers from 1 to n having sum n
54. Replace each element of the array by its corresponding rank in the array
55. Print all Triplets in an array with sum less than or equal to given number
56. Group elements of an array based on their first occurrence
57. Find minimum difference between index of two given elements present in the array
58. Find maximum absolute difference between sum of two non-overlapping sub-arrays
59. Find all Symmetric Pairs in an Array of Pairs
60. Partition an array into two sub-arrays with the same sum
61. Find count of distinct elements in every sub-array of size k
62. Find two numbers with maximum sum formed by array digits
63. Print all sub-arrays of an array having distinct elements
64. Find a Triplet having Maximum Product in an Array
65. Find Minimum Index of Repeating Element in an Array

66. Generate random input from an array according to given probabilities
67. Find pair in an array having minimum absolute sum
68. Find Index of Maximum Occurring Element with Equal Probability
69. Check if an Array is Formed by Consecutive Integers
70. Find two non-overlapping pairs having same sum in an array
71. Add elements of two arrays into a new array
72. Find Minimum Product among all Combinations of Triplets in an Array
73. Replace every element of an array with the least greater element on its right
74. Find all odd occurring elements in an array having limited range of elements
75. Count the distinct absolute values in the sorted array
76. Print all combinations of positive integers in increasing order that sum to a given number
77. Find all distinct combinations of given length — II
78. Find subarrays with given sum in an array
79. Find the surpasser count for each element of an array
80. Find maximum length sequence of continuous ones (Using Sliding Window)
81. Find maximum length sequence of continuous ones
82. Find index that divides an array into two non-empty subarrays of equal sum
83. Calculate frequency of all elements present in an array of specified range
84. Rearrange the array such that it contains positive and negative numbers at alternate positions
85. Find a sorted triplet in the given array
86. Shuffle an array according to the given order of elements
87. Count number of strictly increasing sub-arrays in an array
88. Find duplicates within given range k in an array
89. Longest Alternating Subarray Problem
90. Find minimum range with at-least one element from each of the given arrays
91. Find longest subsequence formed by consecutive integers
92. Find all elements in an array that are greater than all elements present to their right
93. Find missing number in array without using extra space
94. Determine index of an element in given array which satisfies given constraints
95. Find minimum moves required for converting a given array to an array of zeroes
96. Left rotate an array
97. Right rotate an array k times
98. Find maximum profit earned from at most two stock transactions
99. Find Frequency of each element in a sorted array containing duplicates
100. Find Minimum and Maximum element in an array using minimum comparisons
101. Difference between Subarray, Subsequence and Subset
102. Find odd occurring element in an array in single traversal
103. Find odd occurring element in logarithmic time
104. Find two odd occurring elements in an array without using any extra space
105. Check if given array represents min heap or not
106. Find K’th smallest element in an array
107. Find K’th largest element in an array
108. Sort a K-Sorted Array
109. Merge M sorted lists of variable length
110. Find smallest range with at-least one element from each of the given lists
111. Merge M sorted lists each containing N elements
112. Find maximum sum of subsequence with no adjacent elements
113. Find ways to calculate a target from elements of specified array
114. Sort elements by their frequency and Index
115. Sort an array based on order defined by another array
116. Inversion Count of an array
117. Segregate positive and negative integers in linear time
118. Find number of rotations in a circularly sorted array
119. Search an element in a circular sorted array
120. Find first or last occurrence of a given number in a sorted array
121. Count occurrences of a number in a sorted array with duplicates
122. Find smallest missing element from a sorted array
123. Find Floor and Ceil of a number in a sorted array
124. Search in a nearly sorted array in logarithmic time
125. Find number of 1’s in a sorted binary array
126. Find Missing Term in a Sequence in Logarithmic time
127. Find missing number and duplicate elements in an array
128. Find the peak element in an array
129. Find Floor and Ceil of a number in a sorted array (Recursive solution)
130. Print all distinct subsets of a given set

131. Find two duplicate elements in a limited range array (using XOR)
132. Combinations of words formed by replacing given numbers with corresponding alphabets
133. 0–1 Knapsack Problem
134. Subset sum Problem
135. Partition Problem
136. 3-Partition Problem
137. 3-partition problem extended | Print all partitions
138. K-Partition Problem | Printing all Partitions
139. Minimum Sum Partition Problem
140. Rod Cutting
141. Longest Alternating Subsequence Problem
142. Coin change-making problem (unlimited supply of coins)
143. Coin Change Problem — Find total number of ways to get the denomination of coins
144. Find maximum profit earned from at most K stock transactions

-: Data Structure | Algorithm Question:-

Backtracking

1. Print all possible solutions to N Queens Problem
2. Print all Possible Knight’s Tours in a chessboard
3. Find Shortest Path in Maze
4. Find Longest Possible Route in a Matrix
5. Find path from source to destination in a matrix that satisfies given constraints
6. Find total number of unique paths in a maze from source to destination
7. Print All Hamiltonian Path present in a graph
8. Print all k-colorable configurations of the graph (Vertex coloring of graph)
9. Find all Permutations of a given string
10. All combinations of elements satisfying given constraints
11. Find all binary strings that can be formed from given wildcard pattern
12. K-Partition Problem | Printing all Partitions
13. Magnet Puzzle
14. Find ways to calculate a target from elements of specified array
15. Find minimum number possible by doing at-most K swaps
16. Determine if a pattern matches with a string or not
17. Generate list of possible words from a character matrix
18. Find the path between given vertices in a directed graph
19. Find all Possible Topological Orderings of a DAG
20. Print all shortest routes in a rectangular grid

The Zen of Python
Python Cheatsheet for beginner🚀🚀

The Linux Commands handbook [A to Z] Commands🧜‍♂️🧜‍♂️

🚀ASP. NET is a popular framework for building web applications and websites using the .NET framework. Here are some of the key features of ASP. NET:

Server-side programming: ASP. NET is a server-side framework, which means that the code runs on the server rather than on the client's computer. This allows for more control over the application and enables developers to build more complex and powerful applications.

Model-View-Controller (MVC) architecture: ASP. NET uses the MVC architecture, which separates the application into three parts: the model (which represents the data), the view (which represents the user interface), and the controller (which handles user input and updates the model and view). This separation of concerns makes it easier to develop and maintain complex applications.

Integration with the .NET framework: ASP. NET integrates with the .NET framework, which provides a rich set of libraries and tools for building web applications. This makes it easier to develop and maintain applications, and also allows for easy integration with other .NET applications.

Cross-platform development: ASP. NET Core is a cross-platform version of ASP. NET that can run on Windows, Linux, and macOS. This allows developers to build web applications that can run on any operating system, which can save time and resources.

Scalability: ASP. NET is designed to be scalable, which means that it can handle high levels of traffic and large amounts of data. This makes it suitable for building applications that need to handle a large number of users or that need to process large amounts of data.

Security: ASP. NET includes a number of security features, such as authentication and authorization, that help protect applications from malicious attacks. It also provides tools for encrypting data, validating user input, and preventing cross-site scripting (XSS) attacks.

Overall, ASP. NET is a powerful and flexible framework for building web applications and websites. Its many features make it suitable for a wide range of applications, from small websites to large enterprise applications.

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5 Essential Features of C# for Modern Programming | CoderBaba
https://youtu.be/NIZSj3U-UnA

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👉🏻Repeater control V/S GridView which on e is better and why?

The choice between using a Repeater control or a GridView control in ASP.NET depends on the specific requirements of the project and the features needed for the presentation of data. Both controls are used to display data from a data source, but they have some key differences in terms of functionality and flexibility.

A GridView control is a more advanced control that provides many features out of the box, such as sorting, filtering, paging, and editing of data. It is a highly customizable control that allows developers to easily bind data from a variety of data sources, including databases, XML, and custom collections. With GridView, developers can easily customize the appearance of data by using templates for columns, rows, and headers.

On the other hand, a Repeater control is a more basic control that provides a greater degree of flexibility in terms of layout and styling. The Repeater control does not have built-in support for features such as sorting, filtering, or editing of data. Instead, it is designed to display data in a highly customizable way, allowing developers to fully control the HTML markup and layout of the rendered data. With a Repeater control, developers can easily customize the appearance of data by using templates for item layout, header, and footer.

So, if the project requires advanced features such as sorting, filtering, and editing of data, then GridView control would be the better option. However, if the project requires a greater degree of flexibility in terms of layout and styling, or if the data being displayed is relatively simple, then Repeater control would be a better choice.

In conclusion, both controls have their own unique strengths and weaknesses, and the choice between them should be based on the specific requirements of the project.

School Database Query:
————————————-
CREATE DATABASE SchoolManagementSystem;
USE SchoolManagementSystem;

CREATE TABLE Grades (
GradeID INT PRIMARY KEY IDENTITY(1,1),
GradeName VARCHAR(50) NOT NULL
);

CREATE TABLE Subjects (
SubjectID INT PRIMARY KEY IDENTITY(1,1),
SubjectName VARCHAR(50) NOT NULL
);

CREATE TABLE Classes (
ClassID INT PRIMARY KEY IDENTITY(1,1),
ClassName VARCHAR(50) NOT NULL,
GradeID INT NOT NULL,
FOREIGN KEY (GradeID) REFERENCES Grades(GradeID)
);

CREATE TABLE Teachers (
TeacherID INT PRIMARY KEY IDENTITY(1,1),
TeacherName VARCHAR(50) NOT NULL,
Email VARCHAR(100) NOT NULL,
Phone VARCHAR(20) NOT NULL,
Address VARCHAR(100) NOT NULL
);

CREATE TABLE Students (
StudentID INT PRIMARY KEY IDENTITY(1,1),
StudentName VARCHAR(50) NOT NULL,
DateOfBirth DATE NOT NULL,
Gender VARCHAR(10) NOT NULL,
Address VARCHAR(100) NOT NULL,
Phone VARCHAR(20) NOT NULL,
Email VARCHAR(50) NOT NULL,
DateEnrolled DATE NOT NULL
);

CREATE TABLE ClassTeachers (
ClassID INT NOT NULL,
TeacherID INT NOT NULL,
PRIMARY KEY (ClassID, TeacherID),
FOREIGN KEY (ClassID) REFERENCES Classes(ClassID),
FOREIGN KEY (TeacherID) REFERENCES Teachers(TeacherID)
);

CREATE TABLE Enrollments (
EnrollmentID INT PRIMARY KEY IDENTITY(1,1),
StudentID INT NOT NULL,
ClassID INT NOT NULL,
EnrollmentDate DATE NOT NULL,
FOREIGN KEY (StudentID) REFERENCES Students(StudentID),
FOREIGN KEY (ClassID) REFERENCES Classes(ClassID)
);

CREATE TABLE Assignments (
AssignmentID INT PRIMARY KEY IDENTITY(1,1),
AssignmentName VARCHAR(50) NOT NULL,
SubjectID INT NOT NULL,
ClassID INT NOT NULL,
TeacherID INT NOT NULL,
DueDate DATE NOT NULL,
FOREIGN KEY (SubjectID) REFERENCES Subjects(SubjectID),
FOREIGN KEY (ClassID) REFERENCES Classes(ClassID),
FOREIGN KEY (TeacherID) REFERENCES Teachers(TeacherID)
);

CREATE TABLE GradesSubjects (
GradeID INT NOT NULL,
SubjectID INT NOT NULL,
PRIMARY KEY (GradeID, SubjectID),
FOREIGN KEY (GradeID) REFERENCES Grades(GradeID),
FOREIGN KEY (SubjectID) REFERENCES Subjects(SubjectID)
);