20240724 Finished

This commit is contained in:
jackfiled 2024-07-24 11:07:18 +08:00
parent ca02539332
commit 5e0c518429
2 changed files with 62 additions and 1 deletions

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@ -183,3 +183,4 @@ mod p215_kth_largest_element_in_an_array;
mod p502_ipo;
mod p373_find_k_pairs_with_smallest_sums;
mod p295_find_median_from_data_stream;
mod p67_add_binary;

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@ -0,0 +1,60 @@
/**
* [67] Add Binary
*/
pub struct Solution {}
// submission codes start here
impl Solution {
pub fn add_binary(a: String, b: String) -> String {
let a: Vec<u32> = a.chars().rev().map(|c| c.to_digit(10).unwrap()).collect();
let b: Vec<u32> = b.chars().rev().map(|c| c.to_digit(10).unwrap()).collect();
let mut result: Vec<u32> = Vec::with_capacity(a.len().max(b.len()) + 2);
let mut overflow = 0;
for i in 0..a.len().max(b.len()) {
let mut bit = overflow;
if i < a.len() {
bit += a[i];
}
if i < b.len() {
bit += b[i];
}
match bit {
3 => {result.push(1); overflow = 1},
2 => {result.push(0); overflow = 1},
1 => {result.push(1); overflow = 0},
0 => {result.push(0); overflow = 0},
_ => {}
}
}
if overflow != 0 {
result.push(overflow);
}
if result.len() == 0 {
result.push(0);
}
result.iter().rev().map(|i| i.to_string()).collect()
}
}
// submission codes end
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_67() {
assert_eq!("100".to_owned(), Solution::add_binary("11".to_owned(), "1".to_owned()));
assert_eq!("10101".to_owned(), Solution::add_binary("1010".to_owned(), "1011".to_owned()));
assert_eq!("110110".to_owned(), Solution::add_binary("100".to_owned(), "110010".to_owned()));
}
}