Merge pull request kelvins#71 from heitor582/main

[rust] adiciona extra Calculo do PI (Leibniz)

Author: kelvins

README.md

@@ -70,7 +70,7 @@ Com o objetivo de alcançar uma abrangência maior e encorajar novas pessoas a c
 | Soma de 2 Números                   | C/C++ | Java | [Python](./src/python/soma_dois_numeros.py) | Go | Ruby | JS | Pascal | Swift | Rust |
 | [Palíndromo][49]                    | [C/C++](./src/c/Palindromo.c) | Java | Python | Go | [Ruby](./src/ruby/Palindromo.rb) | [JS](./src/javascript/Palindromo.js) | Pascal | [Swift](./src/swift/palindromo.swift) | [Rust](./src/rust/palindromo.rs) |
 | Lista Ligada Desordenada            | C/C++ | Java | [Python](./src/python/lista_encadeada_desordenada.py) | Go | Ruby | JS | Pascal | Swift | Rust |
-| [Calculo do PI (Leibniz)][50]       | C/C++ | Java | [Python](./src/python/calculate_pi.py) | [Go](./src/go/calculatepi/calculatepi.go) | Ruby | [JS](./src/javascript/calculate_pi.js) | Pascal | Swift | Rust |
+| [Calculo do PI (Leibniz)][50]       | C/C++ | Java | [Python](./src/python/calculate_pi.py) | [Go](./src/go/calculatepi/calculatepi.go) | Ruby | [JS](./src/javascript/calculate_pi.js) | Pascal | Swift | [Rust](./src/rust/calculate_pi.rs) |
 | Busca em Labirinto                  | C/C++ | Java | [Python](./src/python/busca_em_labirinto.py) | Go | Ruby | JS | Pascal | Swift | Rust |
 
 ## :ferris_wheel: Playgrounds

src/rust/calculate_pi.rs

@@ -0,0 +1,21 @@
+fn main(){
+  println!("{:?}", calculate_pi(vec![10, 1000, 100000, 10000000]));
+}
+fn calculate_pi(terms: Vec<i32>) -> Vec<f64> {
+  let mut denominator: f64;
+  let mut operation: f64;
+  let mut pi: Vec<f64> = Vec::<f64>::new();
+
+  for i in 0..terms.len() {
+    denominator = 1.0;
+    operation = 1.0;
+    pi.push(0.0);
+    for _ in 0..terms[i] {
+      let i: usize = i as usize;
+      pi[i] += operation * (4.0 / denominator);
+      denominator += 2.0;
+      operation *= -1.0;
+    }
+  }
+  pi
+}