Interested to Buy Any Domain ? << Click Here >> for more details...
Given an array of size N in which every number is between 1
and N, determine if there are any duplicates in it. You are
allowed to destroy the array if you like.
- 21 Answers
- 65308 Views
- ABC, eBay, Goldman Sachs, Google, HUP, Microsoft, TATA, I also Faced
- E-Mail Answers
Answer Posted / faykarta
I'm nearly 100% sure that the only way to do this without
allocating more space is to loop through the entire array
checking elements against each other. Because its an
iterative method it can be optimised for linear memory access.
consider:
for(i = 0; i < N; ++i)
{
for(j = i + 1; j < N; ++j)
{
if(array[i] == array[j])
{
//index look up avoided through compiler optimisation???
return true;
}
}
}
return false;
*(Cache Integrity)The optimisation could be made using
pointer arithmetic or iterator style traversal in C/C++ anyway.
You could perform a custom sort operation that throws out
but i think it will be about the same algorithmic complexity
with less linear memory access and more complex code....
consider: (havent tested this one)
for(i = 0; i < N; ++i)
{
j = array[i] - 1;
while(j != i)
{
//check
if(array[i] == array[j])
{
return true;
}
//swap
array[i] ^= array[j] ^= array[i] ^= array[j];
j = array[i] - 1;
}
}
return false;
Any thoughts on these?
I would stick with brute force method.
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
In a gymnastic competition, scoring is based on the average of all scores given by the judges excluding the maximum and minimum scores. Let the user input the number of judges, after that, input the scores from the judges. Output the average score. Note: In case, more than two judges give the same score and it happens that score is the maximum or minimum then just eliminate two scores. For example, if the number of judges is 5 and all of them give 10 points each. Then the maximum and minimum score is 10. So the computation would be 10+10+10, this time. The output should be 10 because 30/3 is 10.
Write a program to model an exploding firecracker in the xy plane using a particle system
Set up procedure for generating a wire frame display of a polyhedron with the hidden edges of the object drawn with dashed lines
Hi, i have a project that the teacher want a pyramid of numbers in C# or java...when we click a button...the pyramid should be generated in a listbox/or JtextArea...and the pyramid should have the folowing form: 1 232 34543 4567654 567898765 67890109876 7890123210987 890123454321098 90123456765432109 0123456789876543210 Plz help with codes...didn't find anything on the net.
What is the match merge ? compare data step match merge with proc sql merge - how many types are there ? data step vs proc sql
What is data _null_? ,Explain with code when u need to use it in data step programming ?
can you use proc sql to manpulate a data set or would u prefer to use proc report ? if so why ? make up an example and explain in detail
Develop a routine to reflect an object about an arbitrarily selected plane
Write a routine to implement the polymarker function
write a program for area of circumference of shapes
write a simple calculator c program to perform addition, subtraction, mul and div.
how to programme using switch statements and fuctions, a programme that will output two even numbers, two odd numbers and two prime numbers of the users chioce.
A program that will create a movie seat reservation. The program will display the summary seats and its status. The user will be ask what seat no. to be reserved, then it will go back again to the summary to display the updated seat status. If the seat no. is already reserved then it will prompt an error message. And also if the input seat no is out of range then it will also prompt an error message. The program is continuously running. Termination of the program will depends on how the programmer will apply. Sample output: Movie Seats Reservation Summary of Seats: Seat 1: Available Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 6 The Seat no. is out of range! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 The Seat no. is already reserved! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 0 GoodBye... Thank You!!!
Given a spherical surface, write bump-mapping procedure to generate the bumpy surface of an orange
To Write a C program to remove the repeated characters in the entered expression or in entered characters(i.e) removing duplicates. String contains only lowercase characters ['a'-'z']
