These are the picking/strum patterns I use to play Memories by Maroon 5. See here for chords/lyrics. See Youtube for my ukulele play-along video.

1. Picking pattern

Here's the timing of the picking pattern.

    Bb    F
    1+2+3+4+1+2+3+4+
  A|----1-------0---
  E|----1-------1---
  C|--2-2-------0---
  G|3---3-2-----2---
    Gm    Dm
    1+2+3+4+1+2+3+4+
  A|----1-------0---
  E|----3-------1---
  C|--2-2-------2---
  G|0---0-2-----2---
    Eb    Bb
    1+2+3+4+1+2+3+4+
  A|----1-------1---
  E|----3-------1---
  C|--3-3-------2---
  G|0---0-3-----3---
    Eb    F
    1+2+3+4+1+2+3+4+
  A|----1-------0---
  E|----3-------1---
  C|--3-3-------0---
  G|0---0-2-----2---
  

2. Strum pattern

Here's the timing of the strum pattern.

  Bb    F
  1+2+3+4+1+2+3+4+
  d d D d   d D du
  Gm    Dm
  1+2+3+4+1+2+3+4+
  d d D d   d D du
  Eb    Bb
  1+2+3+4+1+2+3+4+
  d d D d   d D du
  Eb    F
  1+2+3+4+1+2+3+4+
  d d D d   d D du