Struct nekolib::ds::wavelet_matrix::WaveletMatrix

pub struct WaveletMatrix<I> { /* private fields */ }

wavelet matrix。

整数に関する多くの区間クエリを処理できる。

Examples

use nekolib::ds::WaveletMatrix;
use nekolib::traits::{Count3way, FindNth, Quantile};

let wm: WaveletMatrix<u32> = vec![1, 8, 4, 9, 2, 7, 5, 2].into();

assert_eq!(wm.count_3way(2.., 5).lt(), 3); // [4, _, 2, _, _, _, 2]

let c3 = wm.count_3way(..6, 2..=7); // [1, 8, 4, 9, 2, 7]
assert_eq!(c3.lt(), 1); // [1, _, _, _, _, _]
assert_eq!(c3.eq(), 3); // [_, _, 4, _, 2, 7]
assert_eq!(c3.gt(), 2); // [_, 8, _, 9, _, _]
assert_eq!(c3.le(), 4);
assert_eq!(c3.ge(), 5);

assert_eq!(wm.quantile(2..=4, 0), Some(2)); // [_, _, 2]
assert_eq!(wm.quantile(2..=4, 1), Some(4)); // [4, _, _]
assert_eq!(wm.quantile(2..=4, 2), Some(9)); // [_, 9, _]
assert_eq!(wm.quantile(2..=4, 3), None);

assert_eq!(wm.find_nth(3.., 2, 0), Some(4));
assert_eq!(wm.find_nth(3.., 2, 1), Some(7));
assert_eq!(wm.find_nth(4.., 2, 0), Some(4));
assert_eq!(wm.find_nth(5.., 2, 0), Some(7));
assert_eq!(wm.find_nth(5.., 2, 1), None);

Implementations

impl<I: WmInt> WaveletMatrix<I>

pub fn xored_quantile( &self, range: impl RangeBounds<usize>, n: usize, x: I ) -> Option<I>

impl<I: WmInt> WaveletMatrix<I>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn rank(&self, end: usize, value: I) -> usize

pub fn select(&self, value: I, n: usize) -> Option<usize>

Trait Implementations

impl<I: WmInt> Count<I> for WaveletMatrix<I>

fn count(&self, range: impl RangeBounds<usize>, value: I) -> usize

impl<I: WmInt> Count<RangeInclusive<I>> for WaveletMatrix<I>

fn count( &self, range: impl RangeBounds<usize>, value: RangeInclusive<I> ) -> usize

impl<I: WmInt> Count3way<I> for WaveletMatrix<I>

fn count_3way( &self, range: impl RangeBounds<usize>, value: I ) -> Count3wayResult

impl<I: WmInt> Count3way<RangeInclusive<I>> for WaveletMatrix<I>

fn count_3way( &self, range: impl RangeBounds<usize>, value: RangeInclusive<I> ) -> Count3wayResult

impl<I: WmInt> FindNth<I> for WaveletMatrix<I>

fn find_nth( &self, range: impl RangeBounds<usize>, value: I, n: usize ) -> Option<usize>

impl<I: WmInt> From<Vec<I, Global>> for WaveletMatrix<I>

fn from(orig: Vec<I>) -> Self

Converts to this type from the input type.

impl<I: WmInt> Index<usize> for WaveletMatrix<I>

type Output = I

The returned type after indexing.

fn index(&self, i: usize) -> &I

Performs the indexing (container[index]) operation.

impl<I: WmInt> Quantile for WaveletMatrix<I>

type Output = I

fn quantile(&self, range: impl RangeBounds<usize>, n: usize) -> Option<I>