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changing datatypes of certain variables

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This commit is contained in:
Mann Patel
2021-06-06 04:49:58 +00:00
parent ed1d09f71b
commit 5bec761756
1 changed files with 9 additions and 8 deletions
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17
data_structures/sparse_table.cpp
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@@ -42,10 +42,11 @@ namespace sparse_table {
* function, for the given array `A`. The answer to queries are stored in the
* array ST.
*/
const static uint32_t N = 12345; ///< the maximum size of the array.
const static uint8_t M = 14; ///< ceil(log2(N)).
struct Sparse_table {
const static uint32_t N = 12345; ///< the maximum size of the array.
const static uint8_t M = 14; ///< ceil(log2(N)).
uint32_t n = 0; ///< size of input array.
size_t n = 0; ///< size of input array.
/** @warning check if `N` is not less than `n`. if so, manually increase the
* value of N */
@@ -65,13 +66,13 @@ struct Sparse_table {
void buildST() {
LOG[0] = -1;
for (uint32_t i = 0; i < n; ++i) {
for (size_t i = 0; i < n; ++i) {
ST[0][i] = i;
LOG[i + 1] = LOG[i] + !(i & (i + 1));
}
for (uint32_t j = 1; (1 << j) <= n; ++j) {
for (uint32_t i = 0; (i + (1 << j)) <= n; ++i) {
for (size_t j = 1; (1 << j) <= n; ++j) {
for (size_t i = 0; (i + (1 << j)) <= n; ++i) {
int64_t x = ST[j - 1][i];
int64_t y = ST[j - 1][i + (1 << (j - 1))];
@@ -89,7 +90,7 @@ struct Sparse_table {
* @complexity: O(1)
*/
int64_t query(int64_t l, int64_t r) {
int64_t g = LOG[r - l + 1];
int64_t g = LOG[r - l + 1]; ///< smallest power of 2 covering [l,r]
int64_t x = ST[g][l];
int64_t y = ST[g][r - (1 << g) + 1];
return (A[x] <= A[y] ? x : y);
@@ -104,7 +105,7 @@ struct Sparse_table {
*/
static void test() {
std::array<int64_t, 10> testcase = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
uint32_t testcase_size = sizeof(testcase) / sizeof(testcase[0]);
size_t testcase_size = sizeof(testcase) / sizeof(testcase[0]);
data_structures::sparse_table::Sparse_table st{};