Method zeros

src/danfojs-base/shared/utils.ts:601–611

* Generates an array of dim (row x column) with inner values set to zero * @param row * @param column

(row: number, column: number)

     * @param column 
     */
    zeros(row: number, column: number): ArrayType1D | ArrayType2D {
        const zeroData = [];
        for (let i = 0; i < row; i++) {
            const colData = Array(column);
            for (let j = 0; j < column; j++) {
                colData[j] = 0;
            }
            zeroData.push(colData);
        }
        return zeroData;
    }

    /**
     * Shuffles and returns a random slice of an array