contest_algorithms::order

Struct SparseIndex

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pub struct SparseIndex { /* private fields */ }
Expand description

A simple data structure for coordinate compression

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impl SparseIndex

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pub fn new(coords: Vec<i64>) -> Self

Builds an index, given the full set of coordinates to compress.

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pub fn compress(&self, q: i64) -> Result<usize, usize>

Returns Ok(i) if the coordinate q appears at index i Returns Err(i) if q appears between indices i-1 and i

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