43 lines
865 B
Rust
43 lines
865 B
Rust
/**
|
|
* [120] Triangle
|
|
*/
|
|
pub struct Solution {}
|
|
|
|
|
|
// submission codes start here
|
|
|
|
impl Solution {
|
|
pub fn minimum_total(triangle: Vec<Vec<i32>>) -> i32 {
|
|
let n = triangle.len();
|
|
let mut dp = vec![i32::MAX; n];
|
|
dp[0] = 0;
|
|
|
|
for i in 0..n {
|
|
let mut next_dp = vec![i32::MAX; n];
|
|
for j in 0..=i {
|
|
if j == 0 {
|
|
next_dp[j] = triangle[i][j] + dp[j];
|
|
} else {
|
|
next_dp[j] = triangle[i][j] + dp[j - 1].min(dp[j]);
|
|
}
|
|
}
|
|
|
|
dp = next_dp;
|
|
}
|
|
|
|
*dp.iter().min().unwrap()
|
|
}
|
|
}
|
|
|
|
// submission codes end
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_120() {
|
|
assert_eq!(11, Solution::minimum_total(vec![vec![2], vec![3, 4], vec![6, 5, 7], vec![4, 1, 8, 3]]));
|
|
}
|
|
}
|