C :: Two Int Arrays - Remove Duplicates From Second
Apr 3, 2013
Code: /*
generals is the first array. Max 10 elements.
numGenerals is the element count of generals.
genBuff is the second array; it is to be checked/pruned.
genCount is the element count of genBuff.
genBuff will be a max of 171, but be pruned to no more than 10, and no more than the complement of the element count of generals.
*/
[Code] ....
(I do have comments in the actual source, different from above).
I have two int arrays. They hold values from 0 to 170. The first one will never be more than 10. The second will be at most 171, but will be whittled down to at most 10, usually less. 171 is worst case, most users of this particular program will probably be reasonable and not try to add all 171 (max is 10 anyway). The first array is the original array. The second array is a temporary array. Any value in the second array that is also found in the first array, is removed from the second array, since all values in the first one must be unique. After this pruning process, both arrays will collectively contain no more than 10 unique elements; the elements from the second will be added to the first.
So right now I have three nested loops. I figured with the miniscule array sizes it wouldn't be a big deal. I can think of a way to remove one or two of them, but I want to be sure that I'm still writing clean, legible, good-practice code. The first loop walks through the first array. For each element in the first array, there is a second loop to walk through the second array to check for duplicates. If a duplicate is found, the third loop walks through the second array to overwrite the duplicate while preserving the second loop's position (j).
Is this dumb? I know that the big O gets worse and worse the deeper you go with nested loops. Even though the arrays are really tiny, is this still a thing to avoid?
I need to remove the duplicates but each part of the vector corresponds to the next location. They are pairs.
ex. bob corresponds to the its definition, which is sam.
I need to keep the first instance, so keep bob and sam, but remove the second instance of bob, so remove bob and sammon. Only the first instance of the pair need to kept.
It doesn't matter if the sam and sammon don't match, all that matters is the first part of the pair.
The vector is already in alphabetical order. I can't use the algorithm library.
I have same question as posted by holla and Iam not sure about merging the contents of 2 sorted arrays into another array without duplication of values.
bool HashTable::insert(char const * const key, const Player& aPlayer) { //calculate the insertion position (the index of the array) size_t index = calculateIndex(key); for(int i=0; i < capacity; i++) {
[Code] ....
The inserting part works just fine, but the checking for duplicates where I compare the two values is crashing my program.
I have a program that's supposed to read in a file with comma seperated values. This file contains duplicates. The goal is to write a new file that does not contain any of the duplicates. I've successfully written the code to read in a file and create a new, identical file, but I'm failing at deleting the duplicates.
The format of each line in the file is: index,first_name,last_name,address,city,state,zip_code
This code writes the file I want (overlooking the duplicates) if I implement my equality operator as follows:
bool operator ==(const Person &a, const Person &B)/> { return false; //placeholder }
Obviously this doesn't get the job done, since it will never detect a duplicate. The problem is that whenever I try to write any meaningful code, the program writes an empty file. The idea I've been trying to implement is to compare each of the members of Person like this:
bool operator ==(const Person &a, const Person &B)/> { //if two Person objects have equivalent names, they are duplicates return ( (a.first_name == b.first_name) && (a.last_name == b.last_name) ) }
At first I thought the program was working just as before, but then deleting each line of the file as the result of an error in my code. However, I tried troubleshooting the problem by adding in
cout << a.last_name;
to parts of my code so I could see the value in certain places. Whenever I add this line or try to access a member of Person, the program writes a blank file.
I want to create a randomly ordered array of integers where there are no duplicates. Is there a way of doing this in one iteration? Or maybe even a standard function for this?
I'm looking for something like this: A2 = [3 2 1 6 7 8 4 5]
I'm having some trouble printing the duplicates found in an array. Specifically, when the value is at more than 2 positions. So if the value 3 is at position 1, 10, and 11 it'll print three messages instead of two:
value 3 at position 1 is also at position 10 value 3 at position 1 is also at position 11 value 3 at position 10 is also at position 11
instead of
value 3 at position 1 is also at position 10 value 3 at position 1 is also at position 11
This is real simple problem, but I can't seem to figure it out. I've been trying to implement another array to 'remember' the encountered position, but I haven't had any luck.
Code: for(i = 0; i < num_count; i++){for (j = i + 1; j < num_count; j++) {if (num[i] == num[j]){printf(" value %d at position %d is also at position %d", num[i], i, j);}}}
I have a text file that needs to be read by command line arguments. The text are all numbers and can have multiple numbers on one line separated by a space. I cannot use an array or sort the numbers.So say I have a text file, listNums.txt:
12 473 8 29 30 1 8 248 17 55 29 84 5
Basically I need to read one number, find out if its odd or even by dividing by 2, search the odd or even doubly linked list that it would go into to see if its in there, if its not then add it to the bottom of the list.
I define "Comwords" as a string, but apparently it takes the members as chars, then I can't set strings in a structure equal to the chars.
I see to also be having unknown problems with the ComMAL array and loading it values into another element of the same structure.
How to correct this? I was thinking of casting char elements as strings, but could find no reference in my library book regarding how to do that (lots on casting int's a doubles...)
Code:
int _tmain(int argc, _TCHAR* argv[]) { int comm = 10; int targ = 5; int death; struct AI_WORDS
Using a for loop, construct two 100 element arrays, x and y, such that element i of x stores the value sin(2*pi*i/100)) and the corresponding element of y stores cos((2*pi*i/100)). Print the values stored in the elements of x and y as you calculate them.
I have attempted to solve it but I'm not sure why the value 0 is only being printed, maybe I haven't assigned sin(2i/100)) and cos((2i/100)) to the arrays properly?
Code: #include<stdio.h> #include<stdlib.h> #include<math.h> int main () {
The following 2 codes are almost identical, only that the switch statements are slightly different. The 2nd code has the issue of requiring an additional enter key to be pressed when I enter '3' as input to exit the program.
Working code :
Code:
#include <stdio.h> #include <ctype.h> #include <string.h> void clearKeyboardBuffer() { int ch; while ((ch = getchar() != '
I know how to remove digits in number from right to left.For example: the number 319. If I do (number /= 10), I get 31.how can I remove digits in number from left to right.For example: the number 319. If I will do something, I will get the number 19.
class List; List *deletezeroendlist(List* L); class List { public: intdigit; List*nextDigit; public: List():digit(0), nextDigit(NULL){} List(int d, List *next):digit(d), nextDigit(next){}
I have tried many different ways but it is still not the answer / perform the function List *deletezeroendlist(List* L)
Below is my .h file and the code below that is my function that I'm having troubles with. Its suppose to take in a users topic and see if that topic exists, if it does exist then find the keyword, commentcompare will find where that keyword is and delete the comment. However its not deleting anything and its returning temp is NULL.
class comment //adds a comment { public: comment(char * create_comment);
How can I remove an element in a list when I have only an iterator that points to the object I want to remove. Is there a build in command? remove() takes an object reference as its argument. Is it possible to convert the iterator into a pointer type so it can be deferenced and passed to remove?
This is the code I am working on:
//player.cpp void Player::CheckCollectableCollisions(std::list<Collectable>& c) { std::list<Collectable>::iterator i = c.begin(); while(i != c.end()) { if (Collider::CheckCollision(pNodes_.front().getLocation(), i->getLocation()))
I am trying to remove the first digit so if the user enters 12345 it should output 2345 the code i have works only for removing the last digit how would i go about removing the first one?
#include <iostream> using namespace std; int removeFirst(int n); int main(){ int n, m; cout << "enter number" << endl;
