how to use the unzip function from the underscore library in javascript

To use the unzip function from the Underscore library in JavaScript, you first need to include the Underscore library in your code. You can do this by adding a script tag to your HTML file that references the Underscore library:

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.13.1/underscore-min.js"></script>
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Once you have included the library, you can use the unzip function to transpose a matrix represented as a list of columns. The unzip function takes an array of arrays and returns an array of arrays, where the first sub-array contains the first element of each input sub-array, the second sub-array contains the second element of each input sub-array, and so on. Here's an example:

index.tsx
const matrix = [[1, 4], [2, 5], [3, 6]];
const transposed = _.unzip(matrix);
console.log(transposed); // => [[1, 2, 3], [4, 5, 6]]
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In this example, we start by defining a matrix represented as an array of columns. We then pass this matrix to the unzip function, which transposes the matrix and returns an array of rows. Finally, we log the transposed matrix to the console.

Note that unzip is a pure function and returns a new, transposed matrix without modifying the input matrix. Also, while unzip works with matrices of any size, it assumes that all sub-arrays have the same length.