@beenotung/tslib/combination.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.combinations = void 0;
// tslint:disable:no-bitwise
function combinations(xs) {
    const xss = [];
    const listLen = xs.length;
    const combinationCount = 1 << listLen;
    for (let i = 1; i < combinationCount; i++) {
        const ys = [];
        for (let j = 0; j < listLen; j++) {
            if (i & (1 << j)) {
                ys.push(xs[j]);
            }
        }
        xss.push(ys);
    }
    return xss;
}
exports.combinations = combinations;
// tslint:enable:no-bitwise
//# sourceMappingURL=combination.js.map