growth-tools-play.ts

/**
 * Calculates table for 
 * @param size  
 */
const calculateTable = (size: number): number[][] => {
    const table = Array.apply(null, new Array(size)).map(() => []); // fill matrix
    for (let i = 0; i < size; i++) {
        for (let j = i; j < size; j++) {
            const value = (j + 1) * (i + 1)
            table[i][j] = value
            table[j][i] = value
        }
    }
    return table
}

/**
 * Prints any grid to console
 * @param table 
 */
const printTable = (table: number[][]): string => {
    let output = ''
    table.forEach(row => {
        row.forEach(item => {
            output += `${item} `
        })
        output += '\n'
    });
    return output
}



/**
 * Prints table grid of size
 * @param size 
 */
const printTableQuick = (size: number): void => {
    for (let i = 1; i <= size; i++) {
        let row = ''
        for (let j = 1; j <= size; j++) {
            row += `${j * i} `
        }
        console.log(row);
    }
}


const table = calculateTable(12);
console.log(printTable(table))
printTableQuick(12)