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#include <iostream>
#include <cstdlib>
#include <ctime>
#include <algorithm>
using namespace std;
const int MAX = 25;
void constructArray (char a [], int);
void printArray (const char a [], int);
void itSwap (char a [], int);
void recSwap (char a [], int);
int main ()
{
char a [MAX];
srand (time (NULL));
int size = rand() % 11 + 15;
constructArray (a, size);
printArray (a, size);
cout << endl;
itSwap (a, size);
cout << endl;
constructArray (a, size);
printArray (a, size);
cout << endl;
recSwap (a, size);
}
void constructArray (char a [], int size)
{
char randUpper, randLower;
int randLetter;
for (int i = 0; i < size; i++)
{
randLetter = rand () % 2 + 1;
randUpper = rand () % 26 + 65;
randLower = rand () % 26 + 97;
if (randLetter == 1)
randLetter = randUpper;
else
randLetter = randLower;
a [i] = randLetter;
}
}
void printArray (const char a [], int size)
{
cout << "Given the following array" << endl;
for (int i = 0; i < size; i++)
cout << a [i] << " ";
cout << endl;
}
void itSwap (char a [], int size)
{
int i = 0;
int j = size - 1;
char temp;
while (i != j)
{
if (a [i] >= 'A' && a [i] <= 'Z')
{
if (a [j] >= 'a' && a [j] <= 'z')
{
temp = a [i];
a [i] = a [j];
a [j] = temp;
}
else --j;
}
else ++i;
}
cout << "Iterative swap of array" << endl;
for (int i = 0; i < size; i++)
cout << a [i] << " ";
cout << endl;
}
void recSwap (char a [], int size)
{
int i = 0;
int j = size - 1;
char temp;
for (int i = 0; i < size; i++)
{
if (a [i] < a [j])
j = i;
}
temp = a [size - 1];
a [size - 1] = a [j];
a [j] = temp;
if (size > 1)
{
recSwap (a, --size);
}
cout << "Recursive swap of array" << endl;
for (int i = 0; i < size; i++)
cout << a [i] << " ";
cout << endl;
}
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