JavaScript Strings: Replacing i with 1 and o with 0

We are required to write a function that takes in a string as one and only argument and returns another string that has all ‘i’ and ‘o’ replaced with ‘1’ and ‘0’ respectively.

It’s one of those classic for loop problems where we iterate over the string with its index and construct a new string as we move through.

The code for the function will be −

const string = 'Hello, is it raining in Amsterdam?';
const validate = (str) => {
   let validatedString = '';
   for(let i = 0; i < str.length; i++){
      if(str[i] === 'a'){
         validatedString += '@';
      }else if(str[i] === 'i'){
         validatedString += '!';
      }else{
         validatedString += str[i];
      };
   };
   return validatedString;
};
console.log(validate(string));

The console output for the code will be −

Hello, !s !t r@!n!ng !n Amsterd@m?

AmitDiwan

Published on 09-Oct-2020 11:54:21

• Related Questions & Answers
• Contiguous subarray with 0 and 1 in JavaScript
• Mode 1—strobed I/O
• Find duplicates in constant array with elements 0 to N-1 in O(1) space in C++
• Comparison of memory-mapped I/O and I/O-mapped I/O
• Replacing vowels with their 1-based index in a string in JavaScript
• Replacing strings with numbers in Python for Data Analysis
• Replacing spaces with underscores in JavaScript?
• Merits of I/O-mapped I/O and demerits of memory-mapped I/O
• Demerits of I/O-mapped I/O and merits of memory-mapped I/O
• Construct DFA with Σ= {0,1} accepts all strings with 0.
• JavaScript: replacing object keys with an array
• Replacing zero starting with whitespace in JavaScript
• Differentiate between programmed I/O and interrupt driven I/O.
• Forming string using 0 and 1 in JavaScript
• Linux and Unix Test Disk I/O Performance with DD Command