Sha256: 0e37e52fab825b5b6b10fba9685b5154c4bd4ecd65564ecfff1ea330c69a962f
Contents?: true
Size: 768 Bytes
Versions: 396
Compression:
Stored size: 768 Bytes
Contents
import BigInt from './big-integer';
/**
* Computes the number of grains on the squares of a
*
* chess board, starting with one grain on the first
* square, and doubling with each successive square.
*/
export default class Grains {
/**
* Gets the number of grains on the nth square
*
* @param {Number} num Number to compute its square
*
* @return {String} Square of num
*/
square(num) {
return BigInt(2).pow(num - 1).toString();
}
/**
* Gets the total number of grains on all squares
*
* @return {String} Sum of all squares
*/
total() {
let total = BigInt(0);
for (let squareNum = 1; squareNum <= 64; squareNum++) {
total = total.add(this.square(squareNum));
}
return total.toString();
}
}
Version data entries
396 entries across 396 versions & 1 rubygems