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#[derive(Clone, PartialEq, Eq)]
pub struct BitSet {
data: Vec<u32>,
size: usize,
}
const BITS: usize = 32;
impl BitSet {
pub fn new(size: usize) -> Self {
Self {
size,
data: vec![0; size.div_ceil(32)],
}
}
pub fn set(&mut self, bit: usize, val: bool) {
assert!(bit < self.size);
let idx = bit / BITS;
let bit = bit % BITS;
if val {
self.data[idx] |= 1 << bit;
} else {
self.data[idx] &= !(1 << bit);
}
}
pub fn get(&self, bit: usize) -> bool {
assert!(bit < self.size);
let idx = bit / BITS;
let bit = bit % BITS;
(self.data[idx] & (1 << bit)) != 0
}
pub fn set_all(&mut self, val: bool) {
let val = if val { !0 } else { 0 };
for d in self.data.iter_mut() {
*d = val;
}
}
}
impl std::fmt::Debug for BitSet {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for i in 0..self.size {
if self.get(i) {
write!(f, "1")?;
} else {
write!(f, "0")?;
}
}
Ok(())
}
}
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