Compare two arrays of single characters and return the difference? JavaScript

We are required to compare, and get the difference, between two arrays containing single character strings appearing multiple times in each array.

Example of two such arrays are −

const arr1 = ['A', 'C', 'A', 'D'];
const arr2 = ['F', 'A', 'T', 'T'];

We will check each character at the same position and return only the parts who are different.

Example

const arr1 = ['A', 'C', 'A', 'D'];
const arr2 = ['F', 'A', 'T', 'T'];
const findDifference = (arr1, arr2) => {
   const min = Math.min(arr1.length, arr2.length);
   let i = 0;
   const res = [];
   while (i < min) {
      if (arr1[i] !== arr2[i]) {
         res.push(arr1[i], arr2[i]);
      };
      ++i;
   };
   return res.concat(arr1.slice(min), arr2.slice(min));
};
console.log(findDifference(arr1, arr2));

Output

And the output in the console will be −

[
   'A', 'F', 'C',
   'A', 'A', 'T',
   'D', 'T'
]

AmitDiwan

Updated on 23-Nov-2020 06:48:17

• Related Questions & Answers
• Compare two arrays and return the element-wise minimum in Numpy
• Compare two arrays and return the element-wise maximum in Numpy
• Compare two Numpy arrays and return the element-wise minimum ignoring NaNs
• Compare two Numpy arrays and return the element-wise maximum with fmax()
• Compare two Numpy arrays and return the element-wise minimum with fmin()
• Compare two arrays and return the element-wise maximum ignoring NaNs in Numpy
• Compare and fill arrays - JavaScript
• Compare two int arrays in a single line in Java
• Compare two short arrays in a single line in Java
• Compare two double arrays in a single line in Java
• Compare two long arrays in a single line in Java
• Compare two float arrays in a single line in Java
• Compare two char arrays in a single line in Java
• Compare two-byte arrays in a single line in Java
• Compare and return True if two string Numpy arrays are not equal