cartesianProduct javascript Code Snippet in 2024
matharraybeginner
Last Updated: 16 December 2024
Calculates the cartesian product of two arrays.
- Use
Array.prototype.reduce(),Array.prototype.map()and the spread operator (...) to generate all possible element pairs from the two arrays.
const cartesianProduct = (a, b) => a.reduce((p, x) => [...p, ...b.map(y => [x, y])], []);
cartesianProduct(['x', 'y'], [1, 2]); // [['x', 1], ['x', 2], ['y', 1], ['y', 2]]
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