 # 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: Sample Solution:

HTML Code:

``````<!DOCTYPE html>
<html>
<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>
<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: 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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﻿

## 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
```