diff options
Diffstat (limited to 'majority-element-ii')
-rw-r--r-- | majority-element-ii/Cargo.toml | 8 | ||||
-rw-r--r-- | majority-element-ii/src/main.rs | 28 |
2 files changed, 36 insertions, 0 deletions
diff --git a/majority-element-ii/Cargo.toml b/majority-element-ii/Cargo.toml new file mode 100644 index 0000000..71a2fbe --- /dev/null +++ b/majority-element-ii/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "majority-element-ii" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] diff --git a/majority-element-ii/src/main.rs b/majority-element-ii/src/main.rs new file mode 100644 index 0000000..34872a4 --- /dev/null +++ b/majority-element-ii/src/main.rs @@ -0,0 +1,28 @@ +fn main() { + println!("Hello, world!"); + let tests = [ + vec![3,2,3], + vec![1], + vec![1,2] + ]; + + for test in tests { + let result = Solution::majority_element(test.clone()); + println!("{test:?} is {result:?}"); + } +} + +struct Solution; + +use std::collections::HashMap; + +impl Solution { + pub fn majority_element(nums: Vec<i32>) -> Vec<i32> { + let mut occurance: HashMap<&i32, i32> = HashMap::new(); + + for num in &nums { + occurance.entry(num).and_modify(|x| {*x += 1}).or_insert(0); + } + occurance.iter().filter(|(_, &occ)| occ >= nums.len() as i32 / 3).map(|(&&num,_)| num).collect() + } +} |