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https://github.com/caperren/school_archives.git
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Added VERY old code. Very cringy to look at, but hey, we all had to start somewhere...
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/* dynamicArray.c: Dynamic Array implementation. */
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#include <assert.h>
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#include <stdlib.h>
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#include "dynamicArray.h"
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struct DynArr
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{
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TYPE *data; /* pointer to the data array */
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int size; /* Number of elements in the array */
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int capacity; /* capacity ofthe array */
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};
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/* ************************************************************************
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Dynamic Array Functions
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************************************************************************ */
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/* Initialize (including allocation of data array) dynamic array.
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param: v pointer to the dynamic array
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param: cap capacity of the dynamic array
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pre: v is not null
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post: internal data array can hold cap elements
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post: v->data is not null
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*/
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void initDynArr(DynArr *v, int capacity)
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{
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assert(capacity > 0);
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assert(v!= 0);
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v->data = (TYPE *) malloc(sizeof(TYPE) * capacity);
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assert(v->data != 0);
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v->size = 0;
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v->capacity = capacity;
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}
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/* Allocate and initialize dynamic array.
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param: cap desired capacity for the dyn array
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pre: none
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post: none
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ret: a non-null pointer to a dynArr of cap capacity
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and 0 elements in it.
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*/
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DynArr* createDynArr(int cap)
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{
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assert(cap > 0);
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DynArr *r = (DynArr *)malloc(sizeof( DynArr));
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assert(r != 0);
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initDynArr(r,cap);
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return r;
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}
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/* Deallocate data array in dynamic array.
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param: v pointer to the dynamic array
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pre: none
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post: d.data points to null
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post: size and capacity are 0
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post: the memory used by v->data is freed
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*/
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void freeDynArr(DynArr *v)
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{
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if(v->data != 0)
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{
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free(v->data); /* free the space on the heap */
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v->data = 0; /* make it point to null */
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}
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v->size = 0;
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v->capacity = 0;
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}
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/* Deallocate data array and the dynamic array ure.
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param: v pointer to the dynamic array
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pre: none
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post: the memory used by v->data is freed
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post: the memory used by d is freed
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*/
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void deleteDynArr(DynArr *v)
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{
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freeDynArr(v);
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free(v);
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}
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/* Resizes the underlying array to be the size cap
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param: v pointer to the dynamic array
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param: cap the new desired capacity
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pre: v is not null
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post: v has capacity newCap
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*/
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void _dynArrSetCapacity(DynArr *v, int newCap)
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{
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/* FIXME: You will write this function */
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}
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/* Get the size of the dynamic array
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param: v pointer to the dynamic array
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pre: v is not null
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post: none
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ret: the size of the dynamic array
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*/
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int sizeDynArr(DynArr *v)
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{
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return v->size;
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}
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/* Adds an element to the end of the dynamic array
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param: v pointer to the dynamic array
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param: val the value to add to the end of the dynamic array
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pre: the dynArry is not null
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post: size increases by 1
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post: if reached capacity, capacity is doubled
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post: val is in the last utilized position in the array
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*/
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void addDynArr(DynArr *v, TYPE val)
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{
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/* FIXME: You will write this function */
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}
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/* Get an element from the dynamic array from a specified position
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param: v pointer to the dynamic array
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param: pos integer index to get the element from
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pre: v is not null
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pre: v is not empty
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pre: pos < size of the dyn array and >= 0
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post: no changes to the dyn Array
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ret: value stored at index pos
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*/
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TYPE getDynArr(DynArr *v, int pos)
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{
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/* FIXME: You will write this function */
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/* FIXME: you must change this return value */
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return 1;
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}
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/* Put an item into the dynamic array at the specified location,
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overwriting the element that was there
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param: v pointer to the dynamic array
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param: pos the index to put the value into
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param: val the value to insert
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pre: v is not null
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pre: v is not empty
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pre: pos >= 0 and pos < size of the array
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post: index pos contains new value, val
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*/
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void putDynArr(DynArr *v, int pos, TYPE val)
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{
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/* FIXME: You will write this function */
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}
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/* Swap two specified elements in the dynamic array
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param: v pointer to the dynamic array
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param: i,j the elements to be swapped
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pre: v is not null
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pre: v is not empty
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pre: i, j >= 0 and i,j < size of the dynamic array
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post: index i now holds the value at j and index j now holds the value at i
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*/
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void swapDynArr(DynArr *v, int i, int j)
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{
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/* FIXME: You will write this function */
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}
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/* Remove the element at the specified location from the array,
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shifts other elements back one to fill the gap
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param: v pointer to the dynamic array
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param: idx location of element to remove
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pre: v is not null
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pre: v is not empty
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pre: idx < size and idx >= 0
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post: the element at idx is removed
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post: the elements past idx are moved back one
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*/
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void removeAtDynArr(DynArr *v, int idx)
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{
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/* FIXME: You will write this function */
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}
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/* ************************************************************************
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Stack Interface Functions
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************************************************************************ */
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/* Returns boolean (encoded in an int) demonstrating whether or not the
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dynamic array stack has an item on it.
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param: v pointer to the dynamic array
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pre: the dynArr is not null
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post: none
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ret: 1 if empty, otherwise 0
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*/
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int isEmptyDynArr(DynArr *v)
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{
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/* FIXME: You will write this function */
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/* FIXME: You will change this return value*/
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return 1;
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}
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/* Push an element onto the top of the stack
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param: v pointer to the dynamic array
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param: val the value to push onto the stack
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pre: v is not null
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post: size increases by 1
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if reached capacity, capacity is doubled
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val is on the top of the stack
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*/
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void pushDynArr(DynArr *v, TYPE val)
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{
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/* FIXME: You will write this function */
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}
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/* Returns the element at the top of the stack
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param: v pointer to the dynamic array
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pre: v is not null
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pre: v is not empty
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post: no changes to the stack
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*/
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TYPE topDynArr(DynArr *v)
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{
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/* FIXME: You will write this function */
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/* FIXME: You will change this return value*/
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return 1;
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}
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/* Removes the element on top of the stack
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param: v pointer to the dynamic array
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pre: v is not null
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pre: v is not empty
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post: size is decremented by 1
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the top has been removed
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*/
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void popDynArr(DynArr *v)
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{
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/* FIXME: You will write this function */
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}
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/* ************************************************************************
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Bag Interface Functions
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************************************************************************ */
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/* Returns boolean (encoded as an int) demonstrating whether or not
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the specified value is in the collection
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true = 1
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false = 0
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param: v pointer to the dynamic array
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param: val the value to look for in the bag
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pre: v is not null
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pre: v is not empty
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post: no changes to the bag
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*/
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int containsDynArr(DynArr *v, TYPE val)
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{
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/* FIXME: You will write this function */
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/* FIXME: You will change this return value */
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return 1;
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}
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/* Removes the first occurrence of the specified value from the collection
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if it occurs
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param: v pointer to the dynamic array
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param: val the value to remove from the array
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pre: v is not null
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pre: v is not empty
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post: val has been removed
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post: size of the bag is reduced by 1
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*/
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void removeDynArr(DynArr *v, TYPE val)
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{
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/* FIXME: You will write this function */
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}
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