C++ Code Interview Questions
Questions Answers Views Company eMail

what is the best algorithm to sort out unique words from a list of more than 10 million words(1 crore+)? we need the best technique in the terms of execution time.

TCS,

9 12769

How to Split Strings with Regex in Managed C++ Applications?

Microsoft,

2424

Code for Method of Handling Factorials of Any Size?

1297




Code for Easily Using Hash Table?

1599

Code for Two Classes for Doing Gzip in Memory?

2055

Code for Small C++ Class to Transform Any Static Control into a Hyperlink Control?

Wipro,

1899

Write A C++ Program To Input A Number Between 20 To 99 And Display Its Numbername?

TCS,

3 10132

Given 1 to n distinct random number of which n+1th element was duplicated. How do find the duplicate element and explain the time complexity of the algorithm.

Microsoft, NetApp,

2333




Given 1 to n random number, find top 10 maximum numbers and explain the time complexity of the algorithm.

NetApp, IMO,

1 5086

Deriving time complexity of Binary tree and AVL tree, step by step.

NetApp,

4 12170

How reader and writer problem was implemented and come up with effective solution for reader and writer problem in case we have n readers and 1 writer.

Microsoft, NetApp,

6 14326

What is the time complexity T(n) of the following program? a) int n, d, i, j; cin >> n; for (d=1; d<=n; d++) for (i=1; i<=d; i++) for (j=1; j<=n; j += n/10) cout << d << " " << i << " " << j << endl; b) void main() { int n, s, t; cin >> n; for (s = 1; s <= n/4; s++) {t = s; while (t >= 1) { cout << s << " " << t << endl; t--; } } } c) void main() { int n, r, s, t; cin >> n; for (r = 2; r <= n; r = r * 2) for (s = 1; s <= n/4; s++) { t = s; while (t >= 1) { cout << s << " " << t << endl; t--; } } }

Infosys, IBM, CTS, Qatar University,

3 6595

Coin Problem You are given 9 gold coins that look identical. One is counterfeit and weighs a bit greater than the others, but the difference is very small that only a balance scale can tell it from the real one. You have a balance scale that costs 25 USD per weighing. Give an algorithm that finds the counterfeit coin with as little weighting as possible. Of primary importance is that your algorithm is correct; of secondary importance is that your algorithm truly uses the minimum number of weightings possible. HINT: THE BEST ALGORITHM USES ONLY 2 WEIGHINGS!!!

Qatar University, Motorola,

1 12563

Show by induction that 2n > n2, for all n > 4.

Qatar University, Karvy,

2 4649

Performance Algorithm A performs 10n2 basic operations and algorithm B performs 300 lg n basic operations. For what value of n does algorithm B start to show its better performance?

Qatar University, ASD Lab, UNV,

5498


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Un-Answered Questions { C++ Code }

Performance Algorithm A performs 10n2 basic operations and algorithm B performs 300 lg n basic operations. For what value of n does algorithm B start to show its better performance?

5498


We need to write the function to check the password entered is correct or not based on the following conditions.. a) It must have atleast one lower case character and one digit. b)It must not have any Upper case characters and any special characters c) length should be b/w 5-12. d) It should not have any same immediate patterns like abcanan1 : not acceptable coz of an an pattern abc11se: not acceptable, coz of pattern 11 123sd123 : acceptable, as not immediate pattern adfasdsdf : not acceptable, as no digits Aasdfasd12: not acceptable, as have uppercase character

3260


develop a program to calculate and print body mass index for 200 employees

1532


Write a program that print in screen a tree with its height taken from user by entering number of 4 digits and find the odd numbers then calculate the sum of odd numbers so he get the height of tree?

2191


3. Program to find the Sum of give series. a. (1)+(1+2)+(1+2+3)+(1+2+3+4)+……………………………….. b. 1/1+1/9+1/25+1/49+……………...

3629






write a program that reverses the input number of n.Formulate an equation to come up with the answer.

5958


i really need help about this.. write a program to display the set of odd and even numbers separately. find the highest and lowest value of the given numbers.

1242


write a program that can LOCATE and INSERT elements in array using c++ programming languages.

2715


How can I Draw an ellipse in 3d space and color it by using graph3d?

1373


how to write a program that opens a file and display in reverse order?

1872


Code for Easily Using Hash Table?

1599


Code for Two Classes for Doing Gzip in Memory?

2055


Implement a command console for changing settings on a particular object. The command console should allow you to enter a string and will return the response (very similar to a terminal session). The commands are as follows: SET propertyname=newvalue will change the target object’s member named “propertyname” to have a value equal to “newvalue”. If the input value is incompatible (i.e. an int being set to a string), print out an appropriate error message. GET propertyname will print out the current value of the target object’s member named “propertyname”. GET * will print out a list of all target object members and their current values. The system should be extensible for future commands and should accept an arbitrary object, such that another developer could insert another object into the system and rely on the command console to get and set the properties correctly.

2631


Write a C++ program without using any loop (if, for, while etc) to print prime numbers from 1 to 100 and 100 to 1 (Do not use 200 print statements!!!)

2521


can you please write a program for deadlock that can detect deadlock and to prevent deadlock.

2029