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Copy path3Sum.js
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39 lines (35 loc) · 1 KB
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// https://leetcode-cn.com/problems/3sum/
var Test = require('../Common/Test');
var threeSum = function (nums) {
nums.sort((a, b) => a - b);
const num1s = new Set();
const result = [];
for (let i = 0; i < nums.length - 2; i++) {
const num1 = nums[i];
if (!num1s.has(num1)) {
num1s.add(num1);
const usedNum2s = new Map();
for (let j = i + 1; j < nums.length; j++) {
const num3 = nums[j];
const num2 = - num1 - num3;
if (usedNum2s.has(num2) && !usedNum2s.get(num2)) {
result.push([num1, num2, num3]);
usedNum2s.set(num2, true);
}
if (!usedNum2s.has(num3)) {
usedNum2s.set(num3, false);
}
}
}
}
return result;
};
function run(nums) {
Test.run(threeSum, nums);
}
run([-1, 0, 1, 2, -1, -4]);
run([0, 0, 0]);
run([0, 0, 0, 0]);
[-1, 0, 1, 2, -1, -4]
[0, 0, 0]
[0, 0, 0, 0]