Question

Writa function to read content from "Zone. txt" and write it into another file "zone1. txt" by reversing each line if the line starts with A​

Answer 1

Answer:

You have specified no language. Here's an algorithm to follow with most platforms, my example is in NodeJS

const fs = require('fs');

let zone = fs.readFile('Zone.txt', 'utf8', function (err, data) {

 if (err) throw new Error(err);

 data = data.toString(); //convert the buffer to a string

 let lines = data.split("\n"),

       content = [];

 for (i in lines) {

   let l = lines[i];

   if (l.toLowerCase().startsWith("a")) l = reverseString(l);

   content.push(l);

 }

 content = content.join("");

 fs.writeFile('zone1.txt', content, , function (err) {

   if (err) throw new Error(err);

 }

});

function reverseString (str) {

   return str.split("").reverse().join("");

}