How to sort user contact array in react native

Question

I am new in react native and I need to design screen same as shown in the image below

Answer 1

same as how you do it in javascript...

  let Array2 = Array1.sort((a, b) => {
  let nameA = a.toLowerCase(), nameB = b.toLowerCase()
  if (nameA < nameB)
    return -1
  if (nameA > nameB)
     return 1
     return 0 
})

better to learn js before starting react-native