From 18a7e32d4046c77949b71e387dfd858aeafe7e16 Mon Sep 17 00:00:00 2001 From: saurabh10041998 Date: Fri, 26 Jan 2024 14:04:21 +0530 Subject: [PATCH 1/2] Leetcode solution to the problem: insert-delete-getrandom-o1 --- rust/0380-insert-delete-getrandom.rs | 40 ++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 rust/0380-insert-delete-getrandom.rs diff --git a/rust/0380-insert-delete-getrandom.rs b/rust/0380-insert-delete-getrandom.rs new file mode 100644 index 000000000..61913abb1 --- /dev/null +++ b/rust/0380-insert-delete-getrandom.rs @@ -0,0 +1,40 @@ +use rand::seq::SliceRandom; +use std::collections::HashMap; + +pub struct RandomizedSet { + mp: HashMap, + arr: Vec, +} + +impl RandomizedSet { + fn new() -> Self { + RandomizedSet { + mp: HashMap::new(), + arr: Vec::new(), + } + } + + fn insert(&mut self, val: i32) -> bool { + let res = !self.mp.contains_key(&val); + if res { + self.mp.insert(val, self.arr.len() as i32); + self.arr.push(val); + } + res + } + fn remove(&mut self, val: i32) -> bool { + let res = self.mp.contains_key(&val); + if res { + let idx = *self.mp.get(&val).unwrap(); + self.mp + .entry(*self.arr.last().unwrap()) + .and_modify(|v| *v = idx); + self.arr.swap_remove(idx as usize); + self.mp.remove(&val); + } + res + } + fn get_random(&self) -> i32 { + *self.arr.choose(&mut rand::thread_rng()).unwrap() + } +} From d482ed58ef6ad371a5f36ca7bc94a3cd57b97ae8 Mon Sep 17 00:00:00 2001 From: Yaseen Khan Date: Sun, 10 Nov 2024 07:49:22 -0700 Subject: [PATCH 2/2] Fixed code file name --- ...ert-delete-getrandom.rs => 0380-insert-delete-getrandom-o1.rs} | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename rust/{0380-insert-delete-getrandom.rs => 0380-insert-delete-getrandom-o1.rs} (100%) diff --git a/rust/0380-insert-delete-getrandom.rs b/rust/0380-insert-delete-getrandom-o1.rs similarity index 100% rename from rust/0380-insert-delete-getrandom.rs rename to rust/0380-insert-delete-getrandom-o1.rs pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.

Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy