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Add hash table and binary search to library

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This commit is contained in:
Doyle Thai 2017-10-29 20:30:07 +11:00
parent 15dad9d8d2
commit 25098ca74c
2 changed files with 921 additions and 101 deletions
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835
dqn.h
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File diff suppressed because it is too large Load Diff

181
dqn_unit_test.cpp
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@ -2067,6 +2067,185 @@ void DqnQuickSort_Test()
}
}
void DqnHashTable_Test()
{
LogHeader("DqnHashTable");
DqnHashTable<u32> hashTable = {};
hashTable.Init(1);
{
hashTable.AddNewEntriesToFreeList(+2);
DQN_ASSERT(hashTable.freeList && hashTable.freeList->next);
DQN_ASSERT(hashTable.numFreeEntries == 2);
hashTable.AddNewEntriesToFreeList(-1);
DQN_ASSERT(hashTable.freeList && !hashTable.freeList->next);
DQN_ASSERT(hashTable.numFreeEntries == 1);
}
{
DQN_ASSERT(hashTable.Get("hello world") == nullptr);
DQN_ASSERT(hashTable.Get("collide key") == nullptr);
DQN_ASSERT(hashTable.Get("crash again") == nullptr);
bool entryAlreadyExisted = true;
auto helloEntry = hashTable.Make("hello world", -1, &entryAlreadyExisted);
DQN_ASSERT(entryAlreadyExisted == false);
entryAlreadyExisted = true;
auto collideEntry = hashTable.Make("collide key", -1, &entryAlreadyExisted);
DQN_ASSERT(entryAlreadyExisted == false);
entryAlreadyExisted = true;
auto crashEntry = hashTable.Make("crash again", -1, &entryAlreadyExisted);
DQN_ASSERT(entryAlreadyExisted == false);
helloEntry->data = 5;
collideEntry->data = 10;
crashEntry->data = 15;
DQN_ASSERT(hashTable.numFreeEntries == 0);
DqnHashTable<u32>::Entry *entry = *hashTable.entries;
DQN_ASSERT(entry->data == 15);
entry = entry->next;
DQN_ASSERT(entry->data == 10);
entry = entry->next;
DQN_ASSERT(entry->data == 5);
DQN_ASSERT(hashTable.usedEntriesIndex == 1);
DQN_ASSERT(hashTable.usedEntries[0] == 0);
DQN_ASSERT(hashTable.numFreeEntries == 0);
}
hashTable.Remove("hello world");
DQN_ASSERT(hashTable.ChangeNumEntries(512));
{
auto helloEntry = hashTable.Get("hello world");
DQN_ASSERT(helloEntry == nullptr);
auto collideEntry = hashTable.Get("collide key");
DQN_ASSERT(collideEntry->data == 10);
auto crashEntry = hashTable.Get("crash again");
DQN_ASSERT(crashEntry->data == 15);
bool entryAlreadyExisted = false;
collideEntry = hashTable.Make("collide key", -1, &entryAlreadyExisted);
DQN_ASSERT(entryAlreadyExisted == true);
entryAlreadyExisted = false;
crashEntry = hashTable.Make("crash again", -1, &entryAlreadyExisted);
DQN_ASSERT(entryAlreadyExisted == true);
}
hashTable.Free();
LogSuccess("DqnHashTable()");
}
void Dqn_BinarySearch_Test()
{
LogHeader("Dqn_BinarySearch");
if (1)
{
auto compare = [](const u32 &a, const u32 &b) -> bool {
bool result = a < b;
return result;
};
u32 array[] = {1, 2, 3};
i64 result = Dqn_BinarySearch<u32>(array, DQN_ARRAY_COUNT(array), 1, compare);
DQN_ASSERT(result == 0);
result = Dqn_BinarySearch<u32>(array, DQN_ARRAY_COUNT(array), 2, compare);
DQN_ASSERT(result == 1);
result = Dqn_BinarySearch<u32>(array, DQN_ARRAY_COUNT(array), 3, compare);
DQN_ASSERT(result == 2);
result = Dqn_BinarySearch<u32>(array, DQN_ARRAY_COUNT(array), 4, compare);
DQN_ASSERT(result == -1);
LogSuccess("Dqn_BinarySearch(): With odd sized array and custom compare");
}
if (1)
{
u32 array[] = {1, 2, 3, 4};
i64 result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 1);
DQN_ASSERT(result == 0);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 2);
DQN_ASSERT(result == 1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 3);
DQN_ASSERT(result == 2);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 4);
DQN_ASSERT(result == 3);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 5);
DQN_ASSERT(result == -1);
LogSuccess("Dqn_BinarySearch(): With even sized array");
}
if (1)
{
i32 array[] = {1, 2, 3};
const bool LOWER_BOUND = true;
i64 result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 0, LOWER_BOUND);
DQN_ASSERT(result == -1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 1, LOWER_BOUND);
DQN_ASSERT(result == -1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 2, LOWER_BOUND);
DQN_ASSERT(result == 0);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 3, LOWER_BOUND);
DQN_ASSERT(result == 1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 4, LOWER_BOUND);
DQN_ASSERT(result == 2);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 5, LOWER_BOUND);
DQN_ASSERT(result == 2);
LogSuccess("Dqn_BinarySearch(): Lower bound with odd sized array");
}
if (1)
{
i32 array[] = {1, 2, 3, 4};
const bool LOWER_BOUND = true;
i64 result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 0, LOWER_BOUND);
DQN_ASSERT(result == -1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 1, LOWER_BOUND);
DQN_ASSERT(result == -1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 2, LOWER_BOUND);
DQN_ASSERT(result == 0);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 3, LOWER_BOUND);
DQN_ASSERT(result == 1);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 4, LOWER_BOUND);
DQN_ASSERT(result == 2);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 5, LOWER_BOUND);
DQN_ASSERT(result == 3);
result = Dqn_BinarySearch(array, DQN_ARRAY_COUNT(array), 6, LOWER_BOUND);
DQN_ASSERT(result == 3);
LogSuccess("Dqn_BinarySearch(): Lower bound with even sized array");
}
}
int main(void)
{
DqnString_Test();
@ -2078,6 +2257,8 @@ int main(void)
DqnArray_Test();
DqnMemStack_Test();
DqnQuickSort_Test();
DqnHashTable_Test();
Dqn_BinarySearch_Test();
#ifdef DQN_XPLATFORM_LAYER
DqnFile_Test();