What is 'y' in the below C program?
Anonymous Quiz
21%
'x' is an array of three pointers
39%
'x' is an array of three function pointers
15%
'x' is a pointer
25%
Error in 'x' declaration
Explanation:
The statement typedef char (*(*arrfptr[4])())[20]; means arfptr is an array of 3 function pointer which will return an array of 20 dimension whose data type is char.
Therefore 'x' is an array of three function pointers.
The statement typedef char (*(*arrfptr[4])())[20]; means arfptr is an array of 3 function pointer which will return an array of 20 dimension whose data type is char.
Therefore 'x' is an array of three function pointers.
Which of the following is used for comments in C++?
Anonymous Quiz
21%
// comment
23%
/* comment */
54%
both // comment or /* comment */
2%
// comment */
Which of these is not an application of a linked list?
Anonymous Quiz
23%
To implement file systems
26%
For separate chaining in hash-tables
17%
To implement non-binary trees
35%
Random Access of elements
Explanation:
To implement file system, for separate chaining in hash-tables and to implement non-binary trees linked lists are used. Elements are accessed sequentially in linked list. Random access of elements is not an applications of linked list.
To implement file system, for separate chaining in hash-tables and to implement non-binary trees linked lists are used. Elements are accessed sequentially in linked list. Random access of elements is not an applications of linked list.
In JavaScript, what kind of scoping is used?
Anonymous Quiz
13%
Literal scoping
31%
Sequential scoping
23%
Segmental scoping
32%
Lexical scoping
Explanation:
In JavaScript, the lexical scoping is used just like many other modern languages.This means a function gets executed using the scope chain which was in effect, when they are defined instead of variable scope which was in effect when they are invoked/called.
In JavaScript, the lexical scoping is used just like many other modern languages.This means a function gets executed using the scope chain which was in effect, when they are defined instead of variable scope which was in effect when they are invoked/called.
What is the replacement of joda time library in java 8?
Anonymous Quiz
35%
java.time (JSR-310)
28%
java.date (JSR-310)
16%
java.joda
21%
java.jodaTime
In C, The return keyword is used for transfer control from a function back to the calling function.
Anonymous Quiz
81%
Yes
19%
No
What are the actual parameters in C++?
Anonymous Quiz
31%
Parameters with which functions are called
44%
Parameters which are used in the definition of a function
23%
Variables other than passed parameters in a function
3%
Variables that are never used in the function
What is the functionality of the following piece of code of DSA?
Anonymous Quiz
15%
Find and delete a given element in the list
33%
Find and return the given element in the list
41%
Find and return the position of the given element in the list
11%
Find and insert a new element in the list
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Answer: No
As we have 2 == operators, so they are executed from left to right.
a == b == c
⇒ (a == b) == c
⇒ (10 == 10) == 10
⇒ true == 10
⇒ 1 == 10
⇒ false
Why is true converted to 1?
The rule for == says if one of the operands is boolean, it's converted to number before the comparison.
true is converted to its number value, which is 1.
As we have 2 == operators, so they are executed from left to right.
a == b == c
⇒ (a == b) == c
⇒ (10 == 10) == 10
⇒ true == 10
⇒ 1 == 10
⇒ false
Why is true converted to 1?
The rule for == says if one of the operands is boolean, it's converted to number before the comparison.
true is converted to its number value, which is 1.
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18 Most common used Java List methods
1. add(E element) - Adds the specified element to the end of the list.
2. addAll(Collection<? extends E> c) - Adds all elements of the specified collection to the end of the list.
3. remove(Object o) - Removes the first occurrence of the specified element from the list.
4. remove(int index) - Removes the element at the specified position in the list.
5. get(int index) - Returns the element at the specified position in the list.
6. set(int index, E element) - Replaces the element at the specified position in the list with the specified element.
7. indexOf(Object o) - Returns the index of the first occurrence of the specified element in the list.
8. contains(Object o) - Returns true if the list contains the specified element.
9. size() - Returns the number of elements in the list.
10. isEmpty() - Returns true if the list contains no elements.
11. clear() - Removes all elements from the list.
12. toArray() - Returns an array containing all the elements in the list.
13. subList(int fromIndex, int toIndex) - Returns a view of the portion of the list between the specified fromIndex, inclusive, and toIndex, exclusive.
14. addAll(int index, Collection<? extends E> c) - Inserts all elements of the specified collection into the list, starting at the specified position.
15. iterator() - Returns an iterator over the elements in the list.
16. sort(Comparator<? super E> c) - Sorts the elements of the list according to the specified comparator.
17. replaceAll(UnaryOperator<E> operator) - Replaces each element of the list with the result of applying the given operator.
18. forEach(Consumer<? super E> action) - Performs the given action for each element of the list until all elements have been processed or the action throws an exception.
1. add(E element) - Adds the specified element to the end of the list.
2. addAll(Collection<? extends E> c) - Adds all elements of the specified collection to the end of the list.
3. remove(Object o) - Removes the first occurrence of the specified element from the list.
4. remove(int index) - Removes the element at the specified position in the list.
5. get(int index) - Returns the element at the specified position in the list.
6. set(int index, E element) - Replaces the element at the specified position in the list with the specified element.
7. indexOf(Object o) - Returns the index of the first occurrence of the specified element in the list.
8. contains(Object o) - Returns true if the list contains the specified element.
9. size() - Returns the number of elements in the list.
10. isEmpty() - Returns true if the list contains no elements.
11. clear() - Removes all elements from the list.
12. toArray() - Returns an array containing all the elements in the list.
13. subList(int fromIndex, int toIndex) - Returns a view of the portion of the list between the specified fromIndex, inclusive, and toIndex, exclusive.
14. addAll(int index, Collection<? extends E> c) - Inserts all elements of the specified collection into the list, starting at the specified position.
15. iterator() - Returns an iterator over the elements in the list.
16. sort(Comparator<? super E> c) - Sorts the elements of the list according to the specified comparator.
17. replaceAll(UnaryOperator<E> operator) - Replaces each element of the list with the result of applying the given operator.
18. forEach(Consumer<? super E> action) - Performs the given action for each element of the list until all elements have been processed or the action throws an exception.
Common Programming Interview Questions
How do you reverse a string?
How do you determine if a string is a palindrome?
How do you calculate the number of numerical digits in a string?
How do you find the count for the occurrence of a particular character in a string?
How do you find the non-matching characters in a string?
How do you find out if the two given strings are anagrams?
How do you calculate the number of vowels and consonants in a string?
How do you total all of the matching integer elements in an array?
How do you reverse an array?
How do you find the maximum element in an array?
How do you sort an array of integers in ascending order?
How do you print a Fibonacci sequence using recursion?
How do you calculate the sum of two integers?
How do you find the average of numbers in a list?
How do you check if an integer is even or odd?
How do you find the middle element of a linked list?
How do you remove a loop in a linked list?
How do you merge two sorted linked lists?
How do you implement binary search to find an element in a sorted array?
How do you print a binary tree in vertical order?
Conceptual Coding Interview Questions
What is a data structure?
What is an array?
What is a linked list?
What is the difference between an array and a linked list?
What is LIFO?
What is FIFO?
What is a stack?
What are binary trees?
What are binary search trees?
What is object-oriented programming?
What is the purpose of a loop in programming?
What is a conditional statement?
What is debugging?
What is recursion?
What are the differences between linear and non-linear data structures?
General Coding Interview Questions
What programming languages do you have experience working with?
Describe a time you faced a challenge in a project you were working on and how you overcame it.
Walk me through a project you’re currently or have recently worked on.
Give an example of a project you worked on where you had to learn a new programming language or technology. How did you go about learning it?
How do you ensure your code is readable by other developers?
What are your interests outside of programming?
How do you keep your skills sharp and up to date?
How do you collaborate on projects with non-technical team members?
Tell me about a time when you had to explain a complex technical concept to a non-technical team member.
How do you get started on a new coding project?
How do you reverse a string?
How do you determine if a string is a palindrome?
How do you calculate the number of numerical digits in a string?
How do you find the count for the occurrence of a particular character in a string?
How do you find the non-matching characters in a string?
How do you find out if the two given strings are anagrams?
How do you calculate the number of vowels and consonants in a string?
How do you total all of the matching integer elements in an array?
How do you reverse an array?
How do you find the maximum element in an array?
How do you sort an array of integers in ascending order?
How do you print a Fibonacci sequence using recursion?
How do you calculate the sum of two integers?
How do you find the average of numbers in a list?
How do you check if an integer is even or odd?
How do you find the middle element of a linked list?
How do you remove a loop in a linked list?
How do you merge two sorted linked lists?
How do you implement binary search to find an element in a sorted array?
How do you print a binary tree in vertical order?
Conceptual Coding Interview Questions
What is a data structure?
What is an array?
What is a linked list?
What is the difference between an array and a linked list?
What is LIFO?
What is FIFO?
What is a stack?
What are binary trees?
What are binary search trees?
What is object-oriented programming?
What is the purpose of a loop in programming?
What is a conditional statement?
What is debugging?
What is recursion?
What are the differences between linear and non-linear data structures?
General Coding Interview Questions
What programming languages do you have experience working with?
Describe a time you faced a challenge in a project you were working on and how you overcame it.
Walk me through a project you’re currently or have recently worked on.
Give an example of a project you worked on where you had to learn a new programming language or technology. How did you go about learning it?
How do you ensure your code is readable by other developers?
What are your interests outside of programming?
How do you keep your skills sharp and up to date?
How do you collaborate on projects with non-technical team members?
Tell me about a time when you had to explain a complex technical concept to a non-technical team member.
How do you get started on a new coding project?
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Stök's YouTube — Videos
Hacker101 Videos — Videos
InsiderPhD YouTube — Videos
EchoCTF — Interactive Learning
Vuln Machines — Videos and Labs
Try2Hack — Interactive Learning
Pentester Land — Written Content
Checkmarx — Interactive Learning
Cybrary — Written Content and Labs
RangeForce — Interactive Exercises
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