TEST(RSDic, random){
RSDicBuilder bvb;
vector<int> B;
const uint64_t n = 100000;
for (int i = 0; i < n; ++i){
int b = rand() % 2;
bvb.PushBack(b);
B.push_back(b);
}
RSDic bv;
bvb.Build(bv);
ASSERT_EQ(n, bv.num());
int sum = 0;
for (size_t i = 0; i < bv.num(); ++i){
ASSERT_EQ(B[i] , bv.GetBit(i)) << " i=" << i;
if (B[i]){
ASSERT_EQ(sum, bv.Rank(i, 1));
ASSERT_EQ(i,bv.Select(sum, 1));
} else {
ASSERT_EQ(i - sum, bv.Rank(i, 0));
ASSERT_EQ(i, bv.Select(i-sum, 0));
}
sum += B[i];
}
ostringstream os;
bv.Save(os);
istringstream is(os.str());
RSDic bv_load;
bv_load.Load(is);
ASSERT_EQ(bv, bv_load);
}
void GMR::BuildGMRBitArray(FFLCArray &fflca){
uint64_t previous = fflca[perm_.Access(0)];
RSDicBuilder bvb;
for(size_t i = 0; i <= fflca[perm_.Access(0)];i++){
bvb.PushBack(1);
}
bvb.PushBack(0);
for(size_t i = 1; i < perm_.Length();i++){
if(previous == fflca[perm_.Access(i)]){
bvb.PushBack(0);
}
else{
for(size_t j = previous; j < fflca[perm_.Access(i)]; j++){
bvb.PushBack(1);
}
bvb.PushBack(0);
}
previous = fflca[perm_.Access(i)];
}
bvb.PushBack(1);
bvb.Build(b_);
}
void WaveletMatrixBuilder::BuildWithAVals(WaveletMatrix& wm, vector<uint32_t>& avals){
uint32_t max_val = GetMax(vals_);
uint32_t max_depth = GetLen(max_val);
wm.max_val_ = max_val;
wm.layers_.resize(max_depth);
vector<uint32_t> zeros;
vector<uint32_t> ones;
vector<uint32_t> zero_avals;
vector<uint32_t> one_avals;
zeros.swap(vals_);
zero_avals = avals;
for (uint32_t depth = 0; depth < max_depth; ++depth){
vector<uint32_t> next_zeros;
vector<uint32_t> next_ones;
vector<uint32_t> next_zero_avals;
vector<uint32_t> next_one_avals;
RSDicBuilder rsdb;
FilterWithAVals(zeros, zero_avals, max_depth - depth - 1, next_zeros, next_ones, next_zero_avals, next_one_avals, rsdb);
FilterWithAVals(ones, one_avals, max_depth - depth - 1, next_zeros, next_ones, next_zero_avals, next_one_avals, rsdb);
zeros.swap(next_zeros);
ones.swap(next_ones);
zero_avals.swap(next_zero_avals);
one_avals.swap(next_one_avals);
rsdb.Build(wm.layers_[depth]);
}
copy(zero_avals.begin(), zero_avals.end(), avals.begin());
copy(one_avals.begin(), one_avals.end(), avals.begin() + zero_avals.size());
}
TEST(RSDic, trivial_one){
RSDicBuilder bvb;
const uint64_t n = 10000;
for (int i = 0; i < n; ++i){
bvb.PushBack(1);
}
RSDic bv;
bvb.Build(bv);
ASSERT_EQ(n, bv.num());
ASSERT_EQ(n, bv.one_num());
for (size_t i = 0; i < bv.num(); ++i){
ASSERT_EQ(1, bv.GetBit(i));
ASSERT_EQ(i, bv.Rank(i, 1)) << " i=" << i;
ASSERT_EQ(i, bv.Select(i, 1)) << " i=" << i;
}
}
TEST(RSDic, small){
RSDicBuilder bvb;
const uint64_t n = 65;
for (int i = 0; i < n; ++i){
bvb.PushBack(1);
}
RSDic bv;
bvb.Build(bv);
ASSERT_EQ(n, bv.num());
ASSERT_EQ(n, bv.one_num());
for (size_t i = 0; i < bv.num(); ++i){
ASSERT_EQ(1, bv.GetBit(i));
ASSERT_EQ(i, bv.Rank(i, 1));
ASSERT_EQ(i, bv.Select(i, 1));
}
}
TEST(RSDic, large){
RSDicBuilder rsdb;
const uint64_t n = 26843545;
vector<uint64_t> poses;
for (uint64_t i = 0; i < n; ++i){
float r = (float)rand() / RAND_MAX;
if (r < 0.001) {
rsdb.PushBack(1);
poses.push_back(i);
}
else rsdb.PushBack(0);
}
RSDic bv;
rsdb.Build(bv);
uint64_t one_num = bv.one_num();
for (uint64_t i = 0; i < one_num; ++i){
ASSERT_EQ(poses[i], bv.Select(i, 1));
}
}
void WaveletMatrixBuilder::Build(WaveletMatrix& wm){
uint32_t max_val = GetMax(vals_);
uint32_t max_depth = GetLen(max_val);
wm.max_val_ = max_val;
wm.layers_.resize(max_depth);
vector<uint32_t> zeros;
vector<uint32_t> ones;
zeros.swap(vals_);
for (uint32_t depth = 0; depth < max_depth; ++depth){
vector<uint32_t> next_zeros;
vector<uint32_t> next_ones;
RSDicBuilder rsdb;
Filter(zeros, max_depth - depth - 1, next_zeros, next_ones, rsdb);
Filter(ones, max_depth - depth - 1, next_zeros, next_ones, rsdb);
zeros.swap(next_zeros);
ones.swap(next_ones);
rsdb.Build(wm.layers_[depth]);
}
}