enhancedmath/lib/Probability/stemleafplot.js

This package contains some enhanced mathematical operations

/**
 * Transforms data into a stem and leaf plot.
 * @param data The data to show in the plot
 * @returns A string containing the plot
 */
const stemleafplot = (data) => {
    let plot = '';
    const sortedData = data.sort((a, b) => a - b);
    const map = new Map();
    sortedData.forEach((el) => {
        if (el < 10) {
            map.set('0', (map.get('0') || '') + el.toString());
        }
        else {
            const start = el.toString().slice(0, el.toString().length - 1);
            const end = el.toString().slice(el.toString().length - 1, el.toString().length);
            map.set(start, (map.get(start) || '') + end);
        }
    });
    for (const key of Array.from(map.keys())) {
        const line = `${key}|${map.get(key)}\n`;
        plot = plot + line;
    }
    return plot;
};
export default stemleafplot;