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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 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.


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Next: Write a JavaScript program to divide two positive numbers and return a string with properly formatted commas.

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JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

const sumPower = (end, power = 2, start = 1) =>
  Array(end + 1 - start)
    .fill(0)
    .map((x, i) => (i + start) ** power)
    .reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925 

Output:

385
3025
2925