Interested to Buy Any Domain ? << Click Here >> for more details...
A research student is given a singly-linked list. Each node
of the list has a color, which is either “Black”
or “White”. He must find if there are more black nodes than
white nodes, or vice versa. His advisor
gives him 5,000Rs to buy a computer to do the work. He goes
to the computer store and finds a
slightly defective computer which costs a mere 3,000Rs. This
computer has the small problem of not
being able to do arithmetic. This means that he cannot use a
counter to count the nodes in the list to
determine the majority color. The computer is otherwise
fully functional. He has the evil idea that he
could buy the defective computer and somehow use it to do
his work, so that he can use the rest of
the money on enjoyment. Show how he can accomplish this
amazing task. Write code for an algorithm
called ‘findMajorityColor’ which takes a singly-linked list,
L, with n nodes and returns the majority color
among nodes of L. This algorithm should have the same
asymptotic running time as counting the
nodes (O(n)). Note: No arithmetic is allowed.
- 2 Answers
- 5025 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / tayyab nasir
The best way to do this is to create a new linked list and insert Black nodes at head and White nodes at tail from the previous to the new list. Then find the middle point of the new list. If middle point is Black then Black nodes are more in number else the White nodes.
| Is This Answer Correct ? | 0 Yes | 0 No |
Algorithm in O(2n) Presently we can solve in our hypothetical machine problem instances of size 100 in 1 minute using algorithm A, which is a O(2n). We would like to solve instances of size 200 in 1 minute using algorithm A on a new machine. What is the speed of the new machine should be?
2 Answers ABC, Qatar University,
1+1/2!+1/3!+...+1/n!
Code for Method of Handling Factorials of Any Size?
write a program in c++ to scramble a bmp image file using a scramble key 0x7c and an XOR logic. print out the original image, the scrambled image and the program. Note: the first 24bytes of a bmp file contain the header information of the file.
1. Write a program using one dimensional array that calculates the sum and average of the five input values from the keyboard and prints the calculated sum and average.
Perform the functionality of 2-D array through 1-D array and in it the functions to be performed were: (1) Display the array in 2-D format (2) Display a particular element (3) Display a particular row (4) Display a particular column
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.
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.
output for printf("printf");
what is virtual constroctor ? give an exam for it?-(parimal dhimmar)
Code for Small C++ Class to Transform Any Static Control into a Hyperlink Control?
Seat Reservation prog for the theatre. Write a function for seat allocation for the movie tickets. Total no of seats available are 200. 20 in each row. Each row is referred by the Character, "A" for the first row and 'J' for the last. And each seat in a row is represented by the no. 1-20. So seat in diffrent rows would be represented as A1,A2....;B1,B2.....;........J1,J2... Each cell in the table represent either 0 or 1. 0 rep would seat is available , 1 would represent seat is reserved. Booking should start from the last row (J) to the first row(A). At the max 20 seats can be booked at a time. if seats are available, then print all the seat nos like "B2" i.e (2 row, 3 col) otherwise Print "Seats are not available." and we must book consecutive seats only.
C Code 
