Question

How to sort by numbers a mixed pair of string and number elements in an array with JavaScript

Answer 1

const arr = [
  "Python 4", "C 9", "C++ 5", "C# 6",
  "Java 1", "PHP 7", "Go 2"
];

function extractNumber(s) {
  const pos = s.lastIndexOf(" ");
  
  return parseInt(s.slice(pos + 1), 10);
}

arr.sort((a, b) => extractNumber(a) - extractNumber(b));

console.log(arr);



/*
run:

[
  'Java 1',   'Go 2',
  'Python 4', 'C++ 5',
  'C# 6',     'PHP 7',
  'C 9'
]

*/

 

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