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#ifndef ARRAYUTILS_H
#define ARRAYUTILS_H
// Add to the end
//  Assumes that we have a separate integer (size) indicating how
// many elements are in the array
//  and that the "true" size of the array is at least one larger
// than the current value of that counter
template <typename T>
void addToEnd (T* array, int& size, T value)
{
array[size] = value;
++size;
}
// Add value into array[index], shifting all elements already in positions
// index..size1 up one, to make room.
//  Assumes that we have a separate integer (size) indicating how
// many elements are in the array
//  and that the "true" size of the array is at least one larger
// than the current value of that counter
template <typename T>
void addElement (T* array, int& size, int index, T value)
{
// Make room for the insertion
int toBeMoved = size  1;
while (toBeMoved >= index) {
array[toBeMoved+1] = array[toBeMoved];
toBeMoved;
}
// Insert the new value
array[index] = value;
++size;
}
// Assume the elements of the array are already in order
// Find the position where value could be added to keep
// everything in order, and insert it there.
// Return the position where it was inserted
//  Assumes that we have a separate integer (size) indicating how
// many elements are in the array
//  and that the "true" size of the array is at least one larger
// than the current value of that counter
template <typename T>
int addInOrder (T* array, int& size, T value)
{
// Make room for the insertion
int toBeMoved = size  1;
while (toBeMoved >= 0 && value < array[toBeMoved]) {
array[toBeMoved+1] = array[toBeMoved];
toBeMoved;
}
// Insert the new value
array[toBeMoved+1] = value;
++size;
return toBeMoved+1;
}
// Search an array for a given value, returning the index where
// found or 1 if not found.
template <typename T>
int seqSearch(const T list[], int listLength, T searchItem)
{
int loc;
for (loc = 0; loc < listLength; loc++)
if (list[loc] == searchItem)
return loc;
return 1;
}
// Search an ordered array for a given value, returning the index where
// found or 1 if not found.
template <typename T>
int seqOrderedSearch(const T list[], int listLength, T searchItem)
{
int loc = 0;
while (loc < listLength && list[loc] < searchItem)
{
++loc;
}
if (loc < listLength && list[loc] == searchItem)
return loc;
else
return 1;
}
// Removes an element from the indicated position in the array, moving
// all elements in higher positions down one to fill in the gap.
template <typename T>
void removeElement (T* array, int& size, int index)
{
int toBeMoved = index + 1;
while (toBeMoved < size) {
array[toBeMoved] = array[toBeMoved+1];
++toBeMoved;
}
size;
}
// Search an ordered array for a given value, returning the index where
// found or 1 if not found.
template <typename T>
int binarySearch(const T list[], int listLength, T searchItem)
{
int first = 0;
int last = listLength  1;
int mid;
bool found = false;
while (first <= last && !found)
{
mid = (first + last) / 2;
if (list[mid] == searchItem)
found = true;
else
if (searchItem < list[mid])
last = mid  1;
else
first = mid + 1;
}
if (found)
return mid;
else
return 1;
}
#endif
