Solve contains-duplicate.
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pub fn contains_duplicate(numbers: Vec<i32>) -> bool {
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// Uncomment FromIterator in Leetcode since they're using Rust Edition 2018.
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// Edition 2021 has this trait in its prelude.
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// use std::iter::FromIterator;
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std::collections::HashSet::<_>::from_iter(numbers.iter()).len()
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!= numbers.len()
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}
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@ -1,4 +1,5 @@
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pub mod add_binary;
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pub mod contains_duplicate;
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pub mod excel_sheet_column_number;
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pub mod excel_sheet_column_title;
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pub mod implement_strstr;
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use leetcode::contains_duplicate::contains_duplicate;
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use test_case::test_case;
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#[test_case(&[1, 2, 3, 1], true; "example 1")]
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#[test_case(&[1, 2, 3, 4], false; "example 2")]
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fn test_contains_duplicate(input: &[i32], expected: bool) {
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assert_eq!(contains_duplicate(input.to_vec()), expected);
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}
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