30 lines
956 B
Rust
30 lines
956 B
Rust
use std::{collections::{HashMap, HashSet}, cmp::Ordering};
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impl Solution {
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pub fn three_sum(mut nums: Vec<i32>) -> Vec<Vec<i32>> {
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nums.sort();
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let mut out = vec![];
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for idx in 0..nums.len() {
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if idx != 0 && nums[idx] == nums[idx - 1] {
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continue;
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}
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let mut l = idx + 1;
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let mut r = nums.len() - 1;
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while l < r {
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let sum = nums[idx] + nums[l] + nums[r];
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match sum.cmp(&0) {
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Ordering::Greater => r -= 1,
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Ordering::Less => l += 1,
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Ordering::Equal => {
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out.push(vec![nums[idx], nums[l], nums[r]]);
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l += 1;
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while nums[l] == nums[l - 1] && l < r {
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l += 1;
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}
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}
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}
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}
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}
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out
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}
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} |