Maximum triangle path sum: Difference between revisions

=={{header|Rust}}==

{{works with|Rust|1.3}}

<lang rust>use std::cmp::max;

fn max_path(vector: &mut Vec<Vec<u32>>) -> u32 {

while vector.len() > 1 {

let last = vector.pop().unwrap();

let ante = vector.pop().unwrap();

let mut new: Vec<u32> = Vec::new();

for (i, value) in ante.iter().enumerate() {

new.push(max(last[i], last[i+1]) + value);

};

vector.push(new);

};

vector[0][0]

}

fn main() {

let mut data = "55

94 48

95 30 96

77 71 26 67

97 13 76 38 45

07 36 79 16 37 68

48 07 09 18 70 26 06

18 72 79 46 59 79 29 90

20 76 87 11 32 07 07 49 18

27 83 58 35 71 11 25 57 29 85

14 64 36 96 27 11 58 56 92 18 55

02 90 03 60 48 49 41 46 33 36 47 23

92 50 48 02 36 59 42 79 72 20 82 77 42

56 78 38 80 39 75 02 71 66 66 01 03 55 72

44 25 67 84 71 67 11 61 40 57 58 89 40 56 36

85 32 25 85 57 48 84 35 47 62 17 01 01 99 89 52

06 71 28 75 94 48 37 10 23 51 06 48 53 18 74 98 15

27 02 92 23 08 71 76 84 15 52 92 63 81 10 44 10 69 93";

let mut vector = data.split("\n").map(|x| x.split(" ").map(|s: &str| s.parse::<u32>().unwrap())

.collect::<Vec<u32>>()).collect::<Vec<Vec<u32>>>();

let max_value = max_path(&mut vector);

println!("{}", max_value);

//=> 7273

}</lang>