data-fns/src/lib/binaryToIndices.ts

This library provides utility functions for working with array data that are useful in many contexts, including creative coding. It offers generic functions that perform common operations such as offsetting an array, generating an array based on a callbac

/**
 * Converts an array of binary digits to an array of indices where the digit is 1.
 * @param binary An array of binary digits (0 or 1).
 * @returns An array of indices where the digit is 1.
 * @example
 * binaryToIndices([1, 0, 1, 1, 0, 1])
 * // Returns [0, 2, 3, 5]
 *
 * binaryToIndices([1, 1, 1, 1, 1])
 * // Returns [0, 1, 2, 3, 4]
 *
 * binaryToIndices([0, 0, 0, 0, 0])
 * // Returns []
 *
 */
export const binaryToIndices = (binary: Array<number>): Array<number> => {
  // Initialize an empty array to store the indices.
  const indices: Array<number> = []

  // Loop through the binary array.
  for (let i = 0; i < binary.length; i++) {
    // If the digit is 1, add the index to the indices array.
    if (binary[i] === 1) {
      indices.push(i)
    }
  }

  // Return the array of indices.
  return indices
}