fork download
copy 
  1. fn main() {
  2.     let mut d = std::collections::VecDeque::new();
  3.     println!("d = {:?}", d);
  4.     d.push_front(4);
  5.     println!("d = {:?}", d);
  6.     d.push_back(2);
  7.     println!("d = {:?}", d);
  8.     let cardinality = d.len();
  9.     println!("cardinality = {:?}", cardinality);
  10.     let head = *d.front().unwrap();
  11.     println!("head = {}", head);
  12.     let tail = *d.back().unwrap();
  13.     println!("tail = {}", tail);
  14.     let popped_head = d.pop_front().unwrap();
  15.     println!("popped_head = {}", popped_head);
  16.     let popped_tail = d.pop_back().unwrap();
  17.     println!("popped_tail = {}", popped_tail);
  18. }
  19.  
Success #stdin #stdout 0s 4552KB
comments ()
stdin
copy 
Standard input is empty
stdout
copy 
d = []
d = [4]
d = [4, 2]
cardinality = 2
head = 4
tail = 2
popped_head = 4
popped_tail = 2
https://ideone.com/zJOuwQ
deque
language:
Rust (rust 1.56)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!