CODEKATA ARRAY

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 A2...

You are given with two arrays. Your task is to merge the array such that first array is in ascending order and second one in descending order. Sample Input : 3 3 23 15 16 357 65 10 Sample Output : 15 16 23 357 65 10     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 = (userInput[0]); var b = (userInput[1]); var c = (userInput[2]) var firstarr=b.split(" ").map(val=>Number(val)) var secondarr=c.split(" ").map(val=>Number(val)) var arr1=firstarr.sort(function(a,b){return a-b}) var arr2=secondarr.sort(function(a,b){return b-a}) var final=(arr1.concat(arr2)) console.log(final.join(" ")) });