oldschoolshuffle

NA

//Start out with a playlist with songs from multiple albums in no particular order

[{albumId: A, trackname: "Dream Maker", trackNumber: 3},
{albumId: C, trackname: "Mess", trackNumber: 1},
{albumId: B, trackname: "Dont", trackNumber: 9},
{albumId: W, trackname: "Me", trackNumber: 5},
{albumId: A, trackname: "Heartbreaker", trackNumber: 2},
{albumId: W, trackname: "With", trackNumber: 2},
{albumId: C, trackname: "Around", trackNumber: 6},
{albumId: A, trackname: "Love Taker", trackNumber: 6}]

//organize the array into object properties based on albumId

{
    A: [{albumId: A, trackname: "Dream Maker", trackNumber: 3},
        {albumId: A, trackname: "Heartbreaker", trackNumber: 2},
        {albumId: A, trackname: "Love Taker", trackNumber: 6}
       ],
    B: [{albumId: B, trackname: "Dont", trackNumber: 9}],
    C: [{albumId: C, trackname: "Mess", trackNumber: 1},
        {albumId: C, trackname: "Around", trackNumber: 6}
       ],
    W: [{albumId: W, trackname: "Me", trackNumber: 5}
        {albumId: W, trackname: "With", trackNumber: 2},
       ]
}

//and finally sort each album array by track number

{
    A: [{albumId: A, trackname: "Heartbreaker", trackNumber: 2},
        {albumId: A, trackname: "Dream Maker", trackNumber: 3},
        {albumId: A, trackname: "Love Taker", trackNumber: 6}
        ],
    B: [{albumId: B, trackname: "Dont", trackNumber: 9}],
    C: [{albumId: C, trackname: "Mess", trackNumber: 1},
        {albumId: C, trackname: "Around", trackNumber: 6}
       ],
    W: [{albumId: W, trackname: "With", trackNumber: 2},
        {albumId: W, trackname: "Me", trackNumber: 5}
       ]
}