get_different_random_numders.js

// names here like ahmed belong to the owner of the problem
let prtext = "Egy";

let ahmed = function() {
  let a = Math.floor(Math.random() * prtext.length);
  let b = "";
  let whichRange = getRandomIntBetweenTwoValues(1, 2);
  // to handle the critical values
  if(a==0)
  {
    whichRange=2;
  }

  if(b== prtext.length)
  {
    whichRange=1;
  }
  // to handle the critical values

  let min1 = 0;
  let max1 = a - 1;
  let min2 = a + 1;
  let max2 = prtext.length;
    //====================> range 1
  if (whichRange == 1) {

    b = getRandomIntBetweenTwoValues(min1, max1);
  }
  //====================> range 2
  if (whichRange == 2) {

    b = getRandomIntBetweenTwoValues(min2, max2);
  }

  if (a !== b) {
    console.log(a, b);
  }
  console.log(a, b);
};

function getRandomIntBetweenTwoValues(min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

ahmed();