Mixing
Non-recurring, Randomized, 2D Char Array That Contains Alphabet For C++ Beginner
-2
Assignment wants from us to create a matrix 5x10 containing English letters randomly and non-recurringly. But since there are 52 letters and 50 rooms in the matrix I had to put away to of them. But if I can randomly generate them there still will me two letter missing but not the same ones.
my code is like this so far;
#include <iostream>
#include <ctime> //for srand (number randomize)
using namespace std;
int main()
{
srand(time(0)); // generates random number
const int ROWS = 5; //declaration of rows
const int COLUMNS = 10; //declaration of columns
//writing content of the matrix
//I took out two letter (v and V) because matrix limit was 50 but all letters were 52
char harf[ROWS][COLUMNS] = {
{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'},
{'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T'},
{'U', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e'},
{'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'},
{'p', 'q', 'r', 's', 't', 'u', 'w', 'x', 'y', 'z'}
};
for (int i = 0; i < ROWS; i++)
{
for (int j = 0; j < COLUMNS; ++j)
{
//generates a random index number
int index1 = rand() % 5; //random numbers 0 to 5
int index2 = rand() % 10; //random numbers 0 to 10
//swaps harf [i][j] with harf [index1][index2] for it won't be repating itself
char temp = harf[i][j];
harf[i][j] = harf[index1][index2];
harf[index1][index2] = temp;
}
}
//printing header and random order matrix
cout << "Random and nonrecurring matrix" << endl << endl;
for (int i = 0; i < ROWS; ++i)
{
for (int j = 0; j < COLUMNS; ++j)
cout << harf[i][j] << " ";
cout << endl << endl;
}
I tried to make this way;
char harf[ROWS][COLUMNS];
for (int i = 0; i < ROWS; i++)
{ for (int j = 0; j < COLUMNS; ++j)
{
harf[i][j] = rand() % 25 + 65 && rand() % 25 + 97; } }
I also tried the same thing with " || " but does not seem to work.
Since this is an assignment I can not use anything more advanced than this kind of expressions. Can someone please tell me how to put the English alphabet into that matrix?
c++ arrays matrix
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
add a comment |
-2
Assignment wants from us to create a matrix 5x10 containing English letters randomly and non-recurringly. But since there are 52 letters and 50 rooms in the matrix I had to put away to of them. But if I can randomly generate them there still will me two letter missing but not the same ones.
my code is like this so far;
#include <iostream>
#include <ctime> //for srand (number randomize)
using namespace std;
int main()
{
srand(time(0)); // generates random number
const int ROWS = 5; //declaration of rows
const int COLUMNS = 10; //declaration of columns
//writing content of the matrix
//I took out two letter (v and V) because matrix limit was 50 but all letters were 52
char harf[ROWS][COLUMNS] = {
{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'},
{'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T'},
{'U', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e'},
{'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'},
{'p', 'q', 'r', 's', 't', 'u', 'w', 'x', 'y', 'z'}
};
for (int i = 0; i < ROWS; i++)
{
for (int j = 0; j < COLUMNS; ++j)
{
//generates a random index number
int index1 = rand() % 5; //random numbers 0 to 5
int index2 = rand() % 10; //random numbers 0 to 10
//swaps harf [i][j] with harf [index1][index2] for it won't be repating itself
char temp = harf[i][j];
harf[i][j] = harf[index1][index2];
harf[index1][index2] = temp;
}
}
//printing header and random order matrix
cout << "Random and nonrecurring matrix" << endl << endl;
for (int i = 0; i < ROWS; ++i)
{
for (int j = 0; j < COLUMNS; ++j)
cout << harf[i][j] << " ";
cout << endl << endl;
}
I tried to make this way;
char harf[ROWS][COLUMNS];
for (int i = 0; i < ROWS; i++)
{ for (int j = 0; j < COLUMNS; ++j)
{
harf[i][j] = rand() % 25 + 65 && rand() % 25 + 97; } }
I also tried the same thing with " || " but does not seem to work.
Since this is an assignment I can not use anything more advanced than this kind of expressions. Can someone please tell me how to put the English alphabet into that matrix?
c++ arrays matrix
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
2
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40
add a comment |
-2
-2
-2
Assignment wants from us to create a matrix 5x10 containing English letters randomly and non-recurringly. But since there are 52 letters and 50 rooms in the matrix I had to put away to of them. But if I can randomly generate them there still will me two letter missing but not the same ones.
my code is like this so far;
#include <iostream>
#include <ctime> //for srand (number randomize)
using namespace std;
int main()
{
srand(time(0)); // generates random number
const int ROWS = 5; //declaration of rows
const int COLUMNS = 10; //declaration of columns
//writing content of the matrix
//I took out two letter (v and V) because matrix limit was 50 but all letters were 52
char harf[ROWS][COLUMNS] = {
{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'},
{'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T'},
{'U', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e'},
{'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'},
{'p', 'q', 'r', 's', 't', 'u', 'w', 'x', 'y', 'z'}
};
for (int i = 0; i < ROWS; i++)
{
for (int j = 0; j < COLUMNS; ++j)
{
//generates a random index number
int index1 = rand() % 5; //random numbers 0 to 5
int index2 = rand() % 10; //random numbers 0 to 10
//swaps harf [i][j] with harf [index1][index2] for it won't be repating itself
char temp = harf[i][j];
harf[i][j] = harf[index1][index2];
harf[index1][index2] = temp;
}
}
//printing header and random order matrix
cout << "Random and nonrecurring matrix" << endl << endl;
for (int i = 0; i < ROWS; ++i)
{
for (int j = 0; j < COLUMNS; ++j)
cout << harf[i][j] << " ";
cout << endl << endl;
}
I tried to make this way;
char harf[ROWS][COLUMNS];
for (int i = 0; i < ROWS; i++)
{ for (int j = 0; j < COLUMNS; ++j)
{
harf[i][j] = rand() % 25 + 65 && rand() % 25 + 97; } }
I also tried the same thing with " || " but does not seem to work.
Since this is an assignment I can not use anything more advanced than this kind of expressions. Can someone please tell me how to put the English alphabet into that matrix?
c++ arrays matrix
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
Assignment wants from us to create a matrix 5x10 containing English letters randomly and non-recurringly. But since there are 52 letters and 50 rooms in the matrix I had to put away to of them. But if I can randomly generate them there still will me two letter missing but not the same ones.
my code is like this so far;
#include <iostream>
#include <ctime> //for srand (number randomize)
using namespace std;
int main()
{
srand(time(0)); // generates random number
const int ROWS = 5; //declaration of rows
const int COLUMNS = 10; //declaration of columns
//writing content of the matrix
//I took out two letter (v and V) because matrix limit was 50 but all letters were 52
char harf[ROWS][COLUMNS] = {
{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'},
{'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T'},
{'U', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e'},
{'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o'},
{'p', 'q', 'r', 's', 't', 'u', 'w', 'x', 'y', 'z'}
};
for (int i = 0; i < ROWS; i++)
{
for (int j = 0; j < COLUMNS; ++j)
{
//generates a random index number
int index1 = rand() % 5; //random numbers 0 to 5
int index2 = rand() % 10; //random numbers 0 to 10
//swaps harf [i][j] with harf [index1][index2] for it won't be repating itself
char temp = harf[i][j];
harf[i][j] = harf[index1][index2];
harf[index1][index2] = temp;
}
}
//printing header and random order matrix
cout << "Random and nonrecurring matrix" << endl << endl;
for (int i = 0; i < ROWS; ++i)
{
for (int j = 0; j < COLUMNS; ++j)
cout << harf[i][j] << " ";
cout << endl << endl;
}
I tried to make this way;
char harf[ROWS][COLUMNS];
for (int i = 0; i < ROWS; i++)
{ for (int j = 0; j < COLUMNS; ++j)
{
harf[i][j] = rand() % 25 + 65 && rand() % 25 + 97; } }
I also tried the same thing with " || " but does not seem to work.
Since this is an assignment I can not use anything more advanced than this kind of expressions. Can someone please tell me how to put the English alphabet into that matrix?
c++ arrays matrix
c++ arrays matrix
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
asked Nov 21 '18 at 19:32
EksiqiltaEksiqilta
1
1
2
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40
add a comment |
2
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40
2
2
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40
add a comment |
1 Answer
1
active
oldest
votes
0
- Create array of length 52.
- Fill this array with the letters of the alphabet, in order if you want.
[abcde.....XYZ]
- Shuffle the entire array.
[dPYka....slqEr]
- Remove the last two characters in the array.
[dPYka...slq]
- Now, to access your random letters, simply read either the first or last character in the array and remove it each time you read one.
[dPYka...slq]-->[dPYka...sl](read a 'q') - Fill your 2 dimensional array by accessing one letter at a time from this array, making sure to remove letters as you go.
If you do it this way, the random letters removed will be purely random (ha*) and the final 5x10 matrix will also be purely random (ha*).
*let's not get into the properties of truly random number generators.
answered Nov 21 '18 at 21:40
MPopsMPops
2356
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
add a comment |
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1 Answer
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1 Answer
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0
- Create array of length 52.
- Fill this array with the letters of the alphabet, in order if you want.
[abcde.....XYZ]
- Shuffle the entire array.
[dPYka....slqEr]
- Remove the last two characters in the array.
[dPYka...slq]
- Now, to access your random letters, simply read either the first or last character in the array and remove it each time you read one.
[dPYka...slq]-->[dPYka...sl](read a 'q') - Fill your 2 dimensional array by accessing one letter at a time from this array, making sure to remove letters as you go.
If you do it this way, the random letters removed will be purely random (ha*) and the final 5x10 matrix will also be purely random (ha*).
*let's not get into the properties of truly random number generators.
answered Nov 21 '18 at 21:40
MPopsMPops
2356
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
add a comment |
0
- Create array of length 52.
- Fill this array with the letters of the alphabet, in order if you want.
[abcde.....XYZ]
- Shuffle the entire array.
[dPYka....slqEr]
- Remove the last two characters in the array.
[dPYka...slq]
- Now, to access your random letters, simply read either the first or last character in the array and remove it each time you read one.
[dPYka...slq]-->[dPYka...sl](read a 'q') - Fill your 2 dimensional array by accessing one letter at a time from this array, making sure to remove letters as you go.
If you do it this way, the random letters removed will be purely random (ha*) and the final 5x10 matrix will also be purely random (ha*).
*let's not get into the properties of truly random number generators.
answered Nov 21 '18 at 21:40
MPopsMPops
2356
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
add a comment |
0
0
0
- Create array of length 52.
- Fill this array with the letters of the alphabet, in order if you want.
[abcde.....XYZ]
- Shuffle the entire array.
[dPYka....slqEr]
- Remove the last two characters in the array.
[dPYka...slq]
- Now, to access your random letters, simply read either the first or last character in the array and remove it each time you read one.
[dPYka...slq]-->[dPYka...sl](read a 'q') - Fill your 2 dimensional array by accessing one letter at a time from this array, making sure to remove letters as you go.
If you do it this way, the random letters removed will be purely random (ha*) and the final 5x10 matrix will also be purely random (ha*).
*let's not get into the properties of truly random number generators.
answered Nov 21 '18 at 21:40
MPopsMPops
2356
- Create array of length 52.
- Fill this array with the letters of the alphabet, in order if you want.
[abcde.....XYZ]
- Shuffle the entire array.
[dPYka....slqEr]
- Remove the last two characters in the array.
[dPYka...slq]
- Now, to access your random letters, simply read either the first or last character in the array and remove it each time you read one.
[dPYka...slq]-->[dPYka...sl](read a 'q') - Fill your 2 dimensional array by accessing one letter at a time from this array, making sure to remove letters as you go.
If you do it this way, the random letters removed will be purely random (ha*) and the final 5x10 matrix will also be purely random (ha*).
*let's not get into the properties of truly random number generators.
answered Nov 21 '18 at 21:40
MPopsMPops
2356
answered Nov 21 '18 at 21:40
MPopsMPops
2356
answered Nov 21 '18 at 21:40
MPopsMPops
2356
answered Nov 21 '18 at 21:40
MPopsMPops
2356
2356
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
add a comment |
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
No need in steps 4,5,6 to remove letters. just walk through the first 50 array elements and enter them sequentially in the 5x10 matrix
– doug
Nov 21 '18 at 22:54
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
I am only allowed to create one matrix (I know it is dumb). but thanks for your answer.
– Eksiqilta
Nov 23 '18 at 15:32
add a comment |
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2
Start with a list of all uppercase and lowercase letters in a separate, one dimensional array. Remove two at random. Then, swap each element in that array with a random element selected from anywhere within the array. (This is "shuffle" randomization known to players of card games and MP3 files.) Then put the results into your 2D array,
– Tim Randall
Nov 21 '18 at 19:40
With the exception of removing two letters at random, your attempt seems to be doing pretty much what I said. What's wrong with your approach?
– Tim Randall
Nov 21 '18 at 19:43
I have to use a 2d array and I have to use only 1 according to the assignment. I made something like this : ` for (int i = 0; i < ROWS; i++) { for (int j = 0; j < 5; ++j) { harf[i][j] = rand() % 25 + 'A'; } } for (int i = 0; i < ROWS; i++) { for (int j = 5; j < 10; ++j) { harf[i][j] = rand() % 25 + 'a'; } } ` but it is repeating characters. @TimRandall @Mpops
– Eksiqilta
Nov 23 '18 at 15:35
Btw nothing is wrong except mine is missing V and v all the time but it should be randomly like everytime 2 letters will be missing but different. But I can not create two separate matrix or other 1d arrays.
– Eksiqilta
Nov 23 '18 at 15:40