h-index Calculator (TypeScript)

h_index.ts

// Example
// Calculates a h-index number from an array of random citations per research publication

// The number of research publications (e.g. journal articles)
let publications = 10;

// Maximum number of citations per publication
let maxCitation = 100; 

// Generates an array of random citations per research publication
const citationsList: number[] = Array.from({length: publications}, () => Math.floor(Math.random() * maxCitation));

// Calculate h-index
console.log(hIndex(citationsList));


// The function

function hIndex(citations: number[]):number {

  if (citations.length == 0) return 0;

  const sortedCitations = citations.sort().reverse();
  let tempIndex: number = 0;

  for (let i = 0; i < sortedCitations.length; i++) {
    if (sortedCitations[i] >= tempIndex) tempIndex++
    else break;
  }

  return tempIndex;
}