JavaScript: Generates all combinations of a string
JavaScript Function: Exercise-3 with Solution
Write a JavaScript function that generates all combinations of a string.
Example string: 'dog'
Expected Output: d,o,do,g,dg,og,dog
Pictorial Presentation:

Sample Solution: -
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Combination of a string</title>
</head>
<body>
</body>
</html>
JavaScript Code:
//Write a JavaScript function that generates all combinations of a string.
function substrings(str1)
{
var array1 = [];
for (var x = 0, y=1; x < str1.length; x++,y++)
{
array1[x]=str1.substring(x, y);
}
var combi = [];
var temp= "";
var slent = Math.pow(2, array1.length);
for (var i = 0; i < slent ; i++)
{
temp= "";
for (var j=0;j<array1.length;j++) {
if ((i & Math.pow(2,j))){
temp += array1[j];
}
}
if (temp !== "")
{
combi.push(temp);
}
}
console.log(combi.join("\n"));
}
substrings("dog");
Sample Output:
d o do g dg og dog
Flowchart:

Live Demo:
See the Pen JavaScript -Check whether a passed string is palindrome or not-function-ex- 2 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript function that checks whether a passed string is palindrome or not?
Next: Write a JavaScript function that returns a passed string with letters in alphabetical order.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
Shorten an array using its length property
A great way of shortening an array is by redefining its length property.
let array = [0, 1, 2, 3, 4, 5, 6, 6, 8, 9] array.length = 4 // Result: [0, 1, 2, 3]
Important to know though is that this is a destructive way of changing the array. This means you lose all the other values that used to be in the array.
Ref: https://bit.ly/2LBj213
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises