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authorJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
committerJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
commit7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch)
treeeb7a24ee2067f92245c57bb118e85a1baf15df50 /other/eval_reverse_polish_notation.rs
parent5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff)
downloadleetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz
leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip
chore: move cpp and rust code to directory
Diffstat (limited to 'other/eval_reverse_polish_notation.rs')
-rw-r--r--other/eval_reverse_polish_notation.rs29
1 files changed, 29 insertions, 0 deletions
diff --git a/other/eval_reverse_polish_notation.rs b/other/eval_reverse_polish_notation.rs
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+++ b/other/eval_reverse_polish_notation.rs
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+struct Solution;
+
+impl Solution {
+ pub fn eval_rpn(tokens: Vec<String>) -> i32 {
+ tokens.iter().fold(Vec::new(), |mut stack, x| {
+ if let Ok(x) = x.parse() {
+ stack.push(x);
+ } else if let (Some(rhs), Some(lhs)) = (stack.pop(), stack.pop()) {
+ stack.push(match x.as_str() {
+ "+" => lhs + rhs,
+ "-" => lhs - rhs,
+ "*" => lhs * rhs,
+ "/" => lhs / rhs,
+ _ => unreachable!()
+ })
+ }
+ stack
+ }) [0]
+ }
+}
+
+fn main() {
+ let tokens1 = ["2","1","+","3","*"];
+ let tokens2 = ["4","13","5","/","+"];
+ let tokens3 = ["10","6","9","3","+","-11","*","/","*","17","+","5","+"];
+ println!("{}", Solution::eval_rpn(tokens1));
+ println!("{}", Solution::eval_rpn(tokens2));
+ println!("{}", Solution::eval_rpn(tokens3));
+}