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update code style for js

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gyt95 2022-12-15 23:41:06 +08:00
parent 3a01f21dca
commit 5694c8e8ff
1 changed files with 18 additions and 18 deletions
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36
codes/javascript/chapter_computational_complexity/leetcode_two_sum.js
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@ -2,7 +2,7 @@
* @Author: gyt95 (gytkwan@gmail.com) * @Author: gyt95 (gytkwan@gmail.com)
* @Date: 2022-12-15 10:51:54 * @Date: 2022-12-15 10:51:54
* @Last Modified by: gyt95 (gytkwan@gmail.com) * @Last Modified by: gyt95 (gytkwan@gmail.com)
* @Last Modified time: 2022-12-15 10:56:26 * @Last Modified time: 2022-12-15 23:40:09
*/ */
/** /**
@ -11,26 +11,26 @@
* @return {number[]} * @return {number[]}
*/ */
function twoSumBruteForce(nums, target) { function twoSumBruteForce(nums, target) {
let n = nums.length; let n = nums.length;
// 两层循环，时间复杂度 O(n^2) // 两层循环，时间复杂度 O(n^2)
for (let i = 0; i < n; i++) { for (let i = 0; i < n; i++) {
for (let j = i + 1; j < n; j++) { for (let j = i + 1; j < n; j++) {
if (nums[i] + nums[j] === target) { if (nums[i] + nums[j] === target) {
return [i, j] return [i, j];
} }
}
} }
}
} }
function twoSumHashTable(nums, target) { function twoSumHashTable(nums, target) {
// 辅助哈希表，空间复杂度 O(n) // 辅助哈希表，空间复杂度 O(n)
let m = {} let m = {};
// 单层循环，时间复杂度 O(n) // 单层循环，时间复杂度 O(n)
for (let i = 0; i < nums.length; i++) { for (let i = 0; i < nums.length; i++) {
if (m[nums[i]] !== undefined) { if (m[nums[i]] !== undefined) {
return [m[nums[i]], i] return [m[nums[i]], i];
} else { } else {
m[target - nums[i]] = i; m[target - nums[i]] = i;
}
} }
}
} }