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Update js code and docs

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gyt95 2022-12-16 16:27:13 +08:00
parent c8da48c0d6
commit dc985cb962
2 changed files with 13 additions and 8 deletions
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17
codes/javascript/chapter_computational_complexity/leetcode_two_sum.js
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@ -5,7 +5,7 @@
*/ */
function twoSumBruteForce(nums, target) { function twoSumBruteForce(nums, target) {
let n = nums.length; const 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++) {
@ -14,6 +14,7 @@ function twoSumBruteForce(nums, target) {
} }
} }
} }
return [];
} }
function twoSumHashTable(nums, target) { function twoSumHashTable(nums, target) {
@ -27,13 +28,15 @@ function twoSumHashTable(nums, target) {
m[target - nums[i]] = i; m[target - nums[i]] = i;
} }
} }
return [];
} }
/* Driver Code */ /* Driver Code */
let nums = [2, 7, 11, 15], target = 9; // 方法一
twoSumBruteForce(nums, target) const nums = [2, 7, 11, 15], target = 9;
console.log("使用暴力枚举后得到结果：", nums) let res = twoSumBruteForce(nums, target)
console.log("方法一 res = ", res)
let nums1 = [2, 7, 11, 15], target1 = 9; // 方法二
twoSumHashTable(nums1, target1) res = twoSumHashTable(nums, target)
console.log("使用辅助哈希表后得到结果", nums1) console.log("方法二 res = ", res)

4
docs/chapter_computational_complexity/space_time_tradeoff.md
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@ -91,7 +91,7 @@ comments: true
```js title="leetcode_two_sum.js" ```js title="leetcode_two_sum.js"
function twoSumBruteForce(nums, target) { function twoSumBruteForce(nums, target) {
let n = nums.length; const 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++) {
@ -100,6 +100,7 @@ comments: true
} }
} }
} }
return [];
} }
``` ```
@ -214,6 +215,7 @@ comments: true
m[target - nums[i]] = i; m[target - nums[i]] = i;
} }
} }
return [];
} }
``` ```