├── driver.js
├── sample.txt
└── searching.js


/driver.js:
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 1 | // const { linearSearch, binarySearch } = require('./searching.js');
 2 | 
 3 | // console.log(linearSearch);
 4 | 
 5 | const fs = require('fs/promises');
 6 | 
 7 | async function readSampleFile() {
 8 |     const data = await fs.readFile('./sample.txt', 'utf-8');
 9 |     console.log(data);
10 | }
11 | 
12 | async function writeSampleFile() {
13 |     await fs.writeFile('./sample.txt', 'Hello World');
14 | }
15 | 
16 | async function appendSampleFile() {
17 |     await fs.appendFile('./sample.txt', 'Hello World');
18 | }
19 | 
20 | appendSampleFile();


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/sample.txt:
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1 | Hello WorldHello World


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/searching.js:
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 1 | function linearSearch(arr, val) {
 2 |     for (let i = 0; i < arr.length; i++) {
 3 |         if (arr[i] === val) return i;
 4 |     }
 5 |     return -1;
 6 | }
 7 | 
 8 | function binarySearch(arr, val) {
 9 |     let left = 0;
10 |     let right = arr.length - 1;
11 |     let middle = Math.floor((left + right) / 2);
12 |     while (arr[middle] !== val && left <= right) {
13 |         if (val < arr[middle]) right = middle - 1;
14 |         else left = middle + 1;
15 |         middle = Math.floor((left + right) / 2);
16 |     }
17 |     return arr[middle] === val ? middle : -1;
18 | }
19 | 
20 | module.exports = {
21 |     linearSearch,
22 |     binarySearch
23 | }


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