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450 lines (364 loc) · 10.7 KB
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/*
* arrayListInt.c
*
* Created on: 01-Dec-2018
* Author: jithin
*/
#include "arrayListInt.h"
struct _array_list_bucket* _new_array_list_bucket (unsigned int len) {
struct _array_list_bucket *bucket = (struct _array_list_bucket *) helper_calloc
(1, sizeof(struct _array_list_bucket), __FILE__, __LINE__);
bucket->data = (u_long *) helper_calloc (len, sizeof(u_long), __FILE__, __LINE__);
return bucket;
}
arrayListtype* new_arrayListtype (unsigned int bucketMaxLen) {
arrayListtype *list = (arrayListtype *) helper_calloc(1, sizeof(arrayListtype),
__FILE__, __LINE__);
list->head = _new_array_list_bucket(bucketMaxLen);
list->tail = list->head;
list->bucketMaxLen = bucketMaxLen;
return list;
}
u_long arrayList_get (arrayListtype *arr, u_long index) {
if (index > arr->size)
helper_err(__FILE__, __LINE__, "index out of bound");
//get to the correct bucket
int skip = index/arr->bucketMaxLen;
struct _array_list_bucket *bucket = arr->head;
while (skip--) {
bucket = bucket->next;
}
int i = index % arr->bucketMaxLen;
return bucket->data[i];
}
void arrayList_put (arrayListtype *arr, u_long val) {
struct _array_list_bucket *bucket = arr->tail;
if (bucket->size >= arr->bucketMaxLen) {
struct _array_list_bucket *b = _new_array_list_bucket(arr->bucketMaxLen);
b->prev = bucket;
bucket->next= b;
bucket = b;
arr->tail = bucket;
}
bucket->data[bucket->size++]=val;
arr->size++;
}
void arrayList_iterateAndWork (arrayListtype *arr, u_long startIndex, u_long endIndex, void (*worker) (u_long)) {
if (endIndex > arr->size || startIndex < 0)
helper_err(__FILE__, __LINE__, "index out of bound");
//get to the correct bucket
int skip = startIndex/arr->bucketMaxLen;
struct _array_list_bucket *bucket = arr->head;
while (skip--) {
bucket = bucket->next;
}
//iterate
int numElements = endIndex-startIndex+1;
int index = startIndex % arr->bucketMaxLen;
while (numElements--) {
if (index >= arr->bucketMaxLen) {
index = 0;
bucket = bucket->next;
}
u_long val = bucket->data[index++];
(*worker) (val);
}
}
void arrayList_iterateAndWork_2 (arrayListtype *arr, u_long startIndex, u_long endIndex,
void (*worker) (int*, int), int *dest) {
if (endIndex > arr->size || startIndex < 0) {
char c[100];
sprintf(c, "index out of bound startIndex:%lu, endIndex:%lu, arraySize:%lu",startIndex, endIndex, arr->size);
helper_err(__FILE__, __LINE__, c);
}
//get to the correct bucket
int skip = startIndex/arr->bucketMaxLen;
struct _array_list_bucket *bucket = arr->head;
while (skip--) {
bucket = bucket->next;
}
//iterate
int numElements = endIndex-startIndex+1;
int index = startIndex % arr->bucketMaxLen;
while (numElements--) {
if (index >= arr->bucketMaxLen) {
index = 0;
bucket = bucket->next;
}
u_long val = bucket->data[index++];
(*worker) (dest, val);
}
}
void arrayList_iterateAndWork_3 (arrayListtype *arr, u_long startIndex, u_long endIndex, int *dest) {
if (endIndex > arr->size || startIndex < 0) {
char c[100];
sprintf(c, "index out of bound startIndex:%lu, endIndex:%lu, arraySize:%lu",startIndex, endIndex, arr->size);
helper_err(__FILE__, __LINE__, c);
}
//get to the correct bucket
int skip = startIndex/arr->bucketMaxLen;
struct _array_list_bucket *bucket = arr->head;
while (skip--) {
bucket = bucket->next;
}
//iterate
int numElements = endIndex-startIndex+1;
int index = startIndex % arr->bucketMaxLen;
while (numElements--) {
if (index >= arr->bucketMaxLen) {
index = 0;
bucket = bucket->next;
}
u_long val = bucket->data[index++];
dest[val]=1;
}
}
void free_arrayListtype(arrayListtype *arr) {
struct _array_list_bucket *bucket=arr->head;
while (bucket) {
struct _array_list_bucket *temp = bucket->next;
free (bucket->data);
free (bucket);
bucket = temp;
}
free(arr);
}
void arrayList_resetIterator (arrayList_Iterator_type *iter, arrayListtype *arr) {
iter->nextIndex =0;
iter->_numBucketsBefore =0;
iter->bucketMaxLen = arr->bucketMaxLen;
iter->bucket = arr->head;
iter->nextAvailable = arr->size;
}
/**
* if NULL is passed the iterator will be initalized without any value
*/
arrayList_Iterator_type* arrayList_getIterator (arrayListtype *arr) {
arrayList_Iterator_type *iter = (arrayList_Iterator_type *) helper_calloc(1, sizeof(arrayList_Iterator_type),
__FILE__, __LINE__);
iter->nextIndex =0;
if (arr) {
iter->bucketMaxLen = arr->bucketMaxLen;
iter->bucket = arr->head;
iter->nextAvailable = arr->size;
}
return iter;
}
arrayList_Iterator_type* arrayList_getIterator_2 (arrayListtype *arr, int startIndex) {
arrayList_Iterator_type *iter = (arrayList_Iterator_type *) helper_malloc(sizeof(arrayList_Iterator_type),
__FILE__, __LINE__);
iter->nextAvailable = arr->size - startIndex;
struct _array_list_bucket *bucket = arr->head;
//got to correct bucket
for (;startIndex >= arr->bucketMaxLen; startIndex -= arr->bucketMaxLen)
bucket = bucket->next;
iter->nextIndex = startIndex;
iter->bucket = bucket;
iter->bucketMaxLen = arr->bucketMaxLen;
return iter;
}
struct _array_list_bucket* arrayList_getBucket (arrayListtype *arr, int startIndex) {
struct _array_list_bucket *bucket = arr->head;
//got to correct bucket
for (;startIndex >= arr->bucketMaxLen; startIndex -= arr->bucketMaxLen)
bucket = bucket->next;
return bucket;
}
/**
* The function does not do error check,
* you should check for next element availability before invoking this
*/
u_long arrayList_IteratorGetNext (arrayList_Iterator_type *iterator) {
iterator->nextAvailable--;
if (iterator->nextIndex >= iterator->bucketMaxLen){
iterator->nextIndex = 0;
iterator->bucket = iterator->bucket->next;
}
return iterator->bucket->data[iterator->nextIndex++];
}
void arrayList_IteratorFree (arrayList_Iterator_type *iterator) {
free (iterator);
}
/**
* This assumes the array list is sorted
*/
void arrayList_IteratorMoveTo(arrayList_Iterator_type *iterator, u_long val) {
while (iterator->nextAvailable) {
if (iterator->nextIndex >= iterator->bucketMaxLen){
iterator->nextIndex = 0;
iterator->bucket = iterator->bucket->next;
}
u_long v = iterator->bucket->data[iterator->nextIndex];
if (v>=val)
break;
else {
iterator->nextAvailable--;
iterator->nextIndex++;
}
}
}
/**
* This assumes the array list is sorted
*/
void arrayList_IteratorMoveTo_Binary(arrayList_Iterator_type *iterator, u_long val) {
int bucketMaxLen = iterator->bucketMaxLen;
int lastIndex; //in the bucket
//goto the right bucket
while (iterator->nextAvailable > 0) {
int dip;
if ((iterator->nextIndex + iterator->nextAvailable) > bucketMaxLen) {
lastIndex = bucketMaxLen - 1;
dip = bucketMaxLen - iterator->nextIndex;
} else {
lastIndex = iterator->nextIndex + iterator->nextAvailable - 1;
dip = iterator->nextAvailable;
}
//is the last element lesser than greater than val
if (iterator->bucket->data[lastIndex] >= val) {
//this is the bucket to be explored
break;
}
iterator->nextAvailable -= dip;
iterator->bucket = iterator->bucket->next;
iterator->nextIndex = 0;
iterator->_numBucketsBefore++;
}
//search the bucket
if (iterator->nextAvailable && iterator->bucket){
//we do binary search between 0 and lastindex
u_long *arr = iterator->bucket->data;
int l=iterator->nextIndex, r=lastIndex;
int c;
int index=l;
while (l <= r) {
c=(l+r)/2;
u_long v = arr[c];
if (v == val) {
//we have found the element
index = c;
break;
} else if (v < val) {
//explore second half
index = c;
l = c + 1;
} else {
//explore first half
r = c - 1;
}
}
//adjust the iterator
iterator->nextAvailable -= (index - iterator->nextIndex);
iterator->nextIndex = index;
while (iterator->nextAvailable) {
if (iterator->nextIndex >= iterator->bucketMaxLen){
iterator->nextIndex = 0;
iterator->bucket = iterator->bucket->next;
}
u_long v = iterator->bucket->data[iterator->nextIndex];
if (v>=val)
break;
else {
iterator->nextAvailable--;
iterator->nextIndex++;
}
}
}
}
int arrayList_IteratorFind(arrayList_Iterator_type *iterator, u_long val, int *found) {
int notEnoughElements=1;
*found = 0;
int bucketMaxLen = iterator->bucketMaxLen;
//goto the right bucket
while (iterator->nextAvailable > 0) {
int lastIndex; //in the bucket
int dip;
if ((iterator->nextIndex + iterator->nextAvailable) > bucketMaxLen) {
lastIndex = bucketMaxLen - 1;
dip = bucketMaxLen - iterator->nextIndex;
} else {
lastIndex = iterator->nextIndex + iterator->nextAvailable - 1;
dip = iterator->nextAvailable;
}
//is the las element lesser than greater than val
if (iterator->bucket->data[lastIndex] >= val) {
//this is the bucket to be explored
break;
}
iterator->nextAvailable -= dip;
iterator->bucket = iterator->bucket->next;
iterator->nextIndex = 0;
iterator->_numBucketsBefore++;
}
while (iterator->nextAvailable) {
if (iterator->nextIndex >= iterator->bucketMaxLen){
iterator->nextIndex = 0;
iterator->bucket = iterator->bucket->next;
}
u_long v = iterator->bucket->data[iterator->nextIndex];
if (v>val) {
notEnoughElements = 0;
break;
} else if (v==val) {
notEnoughElements = 0;
*found = 1;
break;
} else {
iterator->nextIndex++;
iterator->nextAvailable--;
}
}
return notEnoughElements;
}
/*
* return the index of the molecule
*/
u_long arrayList_IteratorFind_Binary(arrayList_Iterator_type *iterator, u_long val, int *found) {
*found = 0;
int ret = -1;
int bucketMaxLen = iterator->bucketMaxLen;
int lastIndex; //in the bucket
//goto the right bucket
while (iterator->nextAvailable > 0) {
int dip;
if ((iterator->nextIndex + iterator->nextAvailable) > bucketMaxLen) {
lastIndex = bucketMaxLen - 1;
dip = bucketMaxLen - iterator->nextIndex;
} else {
lastIndex = iterator->nextIndex + iterator->nextAvailable - 1;
dip = iterator->nextAvailable;
}
//is the las element lesser than greater than val
if (iterator->bucket->data[lastIndex] >= val) {
//this is the bucket to be explored
break;
}
iterator->nextAvailable -= dip;
iterator->bucket = iterator->bucket->next;
iterator->nextIndex = 0;
iterator->_numBucketsBefore++;
}
//search the bucket
if (iterator->nextAvailable && iterator->bucket){
//we do binary search between 0 and lastindex
u_long *arr = iterator->bucket->data;
int l=0, r=lastIndex;
int c;
while (l <= r) {
c=(l+r)/2;
u_long v = arr[c];
if (v == val) {
//we have found the element
ret = iterator->_numBucketsBefore * bucketMaxLen + c;
*found = 1;
break;
} else if (v < val) {
//explore second half
l = c + 1;
} else {
//explore first half
r = c - 1;
}
}
}
return ret;
}