DEBUG

20.You are given with a list of size ‘n’. The list is imposed with a condition that all elements must be of range 0 to n-1.Your task is to rearrange the numbers such that arr[i] becomes arr[arr[i]].

Sample Input :
5
4 0 2 1 3

Sample Output :
3 4 2 0 1

const readline = require('readline');
const inp = readline.createInterface({
  input: process.stdin
});
const userInput = [];
inp.on("line", (data) => {
userInput.push(data);
});
inp.on("close", () => 
{var a =Number(userInput[0]);
 var inp =String(userInput[1]);
 var arr =inp.split(" ").map(val=>Number(val))
 var myarr=[]
 for(i=0;i<a;i++)
 {myarr[i]=arr[arr[i]]}
 var final=myarr.join(" ")
 console.log(final);
 });

16.You are a passport issuer, but due to some problems in the system, there
 are redundant  passport numbers. Your task is to delete all the 
duplicate passport numbers. You are given a list of passport numbers. 
 

Sample Input :
5
A23 B56 B56 C79 D16

Sample Output :
A23 B56 C79 D16


const readline = require('readline');
const inp = readline.createInterface({
  input: process.stdin
});
const userInput = [];
inp.on("line", (data) => {
userInput.push(data);
});
inp.on("close", () =>
{var a = parseInt(userInput[0]);
 var inp = String(userInput[1]);
 var arr = inp.split(" ")
 for(i=0;i<a;i++)
 {
 for(j=1;j<a;j++)
 {
     if(arr[i]==arr[j])
     arr.splice(i,1)
   
 }  
 }
 console.log(arr);
 });