berger-table-generator v1.0.4

Berger table (round-robin) generator for tournaments

Function signature

bergerTable: (teams: number | Array<any>, useDummy?: boolean, dummy?: any) => [Array<{ round: number, game: number, teamA: any, teamB: any }>];

If an array of objects is passed as an argument, the function will not perform any mutations on it. However, the output will contain the same object references that were passed in. Any changes made on them will have the same effect as changing the original Team objects. If useDummy is set to true, empty object or the provided dummy value will be used in case the number of teams is odd. Default value is false, meaning, teams without a pair will be ommited in each round.

npm install --save berger-table-generator

import bergerTable from 'berger-table-generator';

console.log(bergerTable(5));
console.log();
console.log(bergerTable(['Bob', 'Joe', 'Anna', 'Maria', 'Jane']));
console.log();
console.log(bergerTable(['Bob', 'Joe', 'Anna', 'Maria', 'Jane'], true, 'DUMMY'));
/*
[ [ { round: 1, game: 1, teamA: 0, teamB: 3 },
    { round: 1, game: 2, teamA: 1, teamB: 4 } ],
  [ { round: 2, game: 1, teamA: 0, teamB: 4 },
    { round: 2, game: 2, teamA: 1, teamB: 2 } ],
  [ { round: 3, game: 1, teamA: 4, teamB: 2 },
    { round: 3, game: 2, teamA: 3, teamB: 1 } ],
  [ { round: 4, game: 1, teamA: 0, teamB: 2 },
    { round: 4, game: 2, teamA: 4, teamB: 3 } ],
  [ { round: 5, game: 1, teamA: 0, teamB: 1 },
    { round: 5, game: 2, teamA: 2, teamB: 3 } ] ]

[ [ { round: 1, game: 1, teamA: 'Bob', teamB: 'Maria' },
    { round: 1, game: 2, teamA: 'Joe', teamB: 'Jane' } ],
  [ { round: 2, game: 1, teamA: 'Bob', teamB: 'Jane' },
    { round: 2, game: 2, teamA: 'Joe', teamB: 'Anna' } ],
  [ { round: 3, game: 1, teamA: 'Jane', teamB: 'Anna' },
    { round: 3, game: 2, teamA: 'Maria', teamB: 'Joe' } ],
  [ { round: 4, game: 1, teamA: 'Bob', teamB: 'Anna' },
    { round: 4, game: 2, teamA: 'Jane', teamB: 'Maria' } ],
  [ { round: 5, game: 1, teamA: 'Bob', teamB: 'Joe' },
    { round: 5, game: 2, teamA: 'Anna', teamB: 'Maria' } ] ]

[ [ { round: 1, game: 1, teamA: 'Bob', teamB: 'Maria' },
    { round: 1, game: 2, teamA: 'Joe', teamB: 'Jane' },
    { round: 1, game: 3, teamA: 'Anna', teamB: 'DUMMY' } ],
  [ { round: 2, game: 1, teamA: 'Bob', teamB: 'Jane' },
    { round: 2, game: 2, teamA: 'Maria', teamB: 'DUMMY' },
    { round: 2, game: 3, teamA: 'Joe', teamB: 'Anna' } ],
  [ { round: 3, game: 1, teamA: 'Bob', teamB: 'DUMMY' },
    { round: 3, game: 2, teamA: 'Jane', teamB: 'Anna' },
    { round: 3, game: 3, teamA: 'Maria', teamB: 'Joe' } ],
  [ { round: 4, game: 1, teamA: 'Bob', teamB: 'Anna' },
    { round: 4, game: 2, teamA: 'DUMMY', teamB: 'Joe' },
    { round: 4, game: 3, teamA: 'Jane', teamB: 'Maria' } ],
  [ { round: 5, game: 1, teamA: 'Bob', teamB: 'Joe' },
    { round: 5, game: 2, teamA: 'Anna', teamB: 'Maria' },
    { round: 5, game: 3, teamA: 'DUMMY', teamB: 'Jane' } ] ]
*/