# C++ Program to Generate a Sequence of N Characters for a Given Specific Case

C++Server Side ProgrammingProgramming

This is a C++ program to generate a sequence of N characters for a given specific case.

## Algorithms

Begin
function GenerateSequence() generate a Sequence of N Characters for a Given Specific Case:
Use rand() for generating random indexes.
Store the first character directly into the sequence.
If that sequence is used earlier, then it discards that and generates random index again.
End

## Example

#include<iostream>
#include<stdlib.h>
#include<string.h>
using namespace std;
void GenerateSequence(char string[], int n, int l, char *sequence)
{
int i, j=0, k,in;
for(i = 0; i < n; i++) {
//store first character directly into sequence
if(j == 0)
sequence[j++] = string[rand()%l];
else {
h:
in = rand()%l;
for(k = 0; k < j; k++) {
if(string[in] == sequence[k])
goto h;
}
sequence[j++] = string[in];
}
}
sequence[j] = '\0'; //end the sequence with null character
}
int main() {
int n, m, l, i;
char string[100];
cout<<"Enter the original string: ";
cin>>string;
cout<<"\nEnter the number of strings to be generated from the Base string: ";
cin>>n;
cout<<"\nEnter the length of each string to be generated: ";
cin>>m;
l = strlen(string);
for(i = 0; i < n; i++) {
char sequence[m];
GenerateSequence(string, m, l, sequence);
cout<<"\nSequence "<<i+1<<": "<<sequence;
}
return 0;
}

## Output

Enter the original string: tutorialspoint
Enter the number of strings to be generated from the Base string: 7
Enter the length of each string to be generated: 6
Sequence 1: tuanol
Sequence 2: itlurp
Sequence 3: tonaiu
Sequence 4: untlri
Sequence 5: liorpt
Sequence 6: liusto
Sequence 7: luisot
Published on 03-May-2019 14:52:29