w3resource

JavaScript: Check whether a given string contains equal number of p's and t's

JavaScript Basic: Exercise-55 with Solution

Write a JavaScript program to check whether a given string contains an equal number of p's and t's.

Pictorial Presentation:

JavaScript: Check whether a given string contains equal number of p's and t's

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>check whether a given string contains equal number of p's and t's</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function equal_pt(str)
{ 
  var str_p = str.replace(/[^p]/g, "");

  var str_t = str.replace(/[^t]/g, "");

  var p_num = str_p.length;
  var s_num = str_t.length;

  return p_num === s_num;
         
}
console.log(equal_pt("paatpss"));
console.log(equal_pt("paatps"));

Sample Output:

false
false

Flowchart:

Flowchart: JavaScript - Check whether a given string contains equal number of p's and t's

ES6 Version:

function equal_pt(str)
{ 
  const str_p = str.replace(/[^p]/g, "");

  const str_t = str.replace(/[^t]/g, "");

  const p_num = str_p.length;
  const s_num = str_t.length;

  return p_num === s_num;
         
}
console.log(equal_pt("paatpss"));
console.log(equal_pt("paatps"));

Live Demo:

See the Pen JavaScript - Check whether a given string contains equal number of p's and t's - basic-ex-55 by w3resource (@w3resource) on CodePen.


Contribute your code and comments through Disqus.

Previous: Write a JavaScript program to count the number of vowels of a given string.
Next: Write a JavaScript program to divide two positive numbers and return a string with properly formatted commas.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.

JavaScript: Tips of the Day

Parse an HTTP Cookie header string and return an object of all cookie name-value pairs

Example:

const parseCookie = str =>
  str
    .split(';')
    .map(v => v.split('='))
    .reduce((acc, v) => {
      acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim());
      return acc;
    }, {});
console.log(parseCookie('foo=bar; equation=E%3Dmc%5E2')); // { foo: 'bar', equation: 'E=mc^2' }

Output:

[object Object] {
  equation: "E=mc^2",
  foo: "bar"
}

 

We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook