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 13512

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

Microsoft,

2572

Code for Method of Handling Factorials of Any Size?

1450




Code for Easily Using Hash Table?

1799

Code for Two Classes for Doing Gzip in Memory?

2186

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

Wipro,

2033

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

TCS,

3 10670

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,

2495




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

NetApp, IMO,

1 5308

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

NetApp,

4 12814

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 15020

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 7077

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 13021

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

Qatar University, Karvy,

2 5030

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,

6030


Post New C++ Code Questions






Un-Answered Questions { C++ Code }

output for printf("printf");

1180


create a stucture student containing field for roll no,class,year and marks.create 10 student annd store them in a file

1615


Given a table of the form: Product Sold on A 1/1/1980 B 1/1/1980 C 1/1/1980 A 1/1/1980 B 1/1/1980 C 2/1/1980 A 2/1/1980 There are 30 products and 10,000 records of such type. Also the month period during which sales happened is given to u. Write the program to display the result as: Product Month No. of copies A January 12 A February 15 A March 27 B January 54 B February 15 B March 10 C January 37

1535


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

2025


write a program to convert temperature from fa height into celcius and vise versa,use modular programming

1791






write a program using 2 D that searches a number and display the number of items 12 inputs values input 15,20, 13, 30, 38, 40,16, 18, 20 ,18 ,20 enter no. to search : 20

2718


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.

1391


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

3398


write a program that reads a series of strings and prints only those strings begging with letter "b"

1763


i don't know about working of nested for loop can any one help me

1268


Write a simple encryption program using string function which apply the substitution method.

4602


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.

2769


write a function that reverse the elements of an array in place.The function must accept only one pointer value and return void.

3150


1+1/2!+1/3!+...+1/n!

1383


Create a program to read two random data set in two files named data1.txt and data2.txt manifold contains integer numbers, whereas data2.txt file contains the float type numbers. Simpanlahmasing each into 2 pieces of data that is an array of type integer array and an array of type float, then calculate the average numbers in the second array.

1546