JavaScript: Hash the input string into a whole number
JavaScript fundamental (ES6 Syntax): Exercise-148 with Solution
Hash String to Whole Number
Write a JavaScript program to hash the input string into a whole number.
- Use String.prototype.split('') and Array.prototype.reduce() to create a hash of the input string, utilizing bit shifting.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
// Define the sdbm function
const sdbm = str => {
let arr = str.split('');
return arr.reduce(
(hashCode, currentVal) =>
(hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
0
);
};
// Calculate the hash code for the string 'name'
console.log(sdbm('name'));
Output:
-3521204949
Flowchart:
Live Demo:
See the Pen javascript-basic-exercise-148-1 by w3resource (@w3resource) on CodePen.
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