public class Solution { public static void main(String[] args) { Scanner input = new Scanner (System.in); int n = input.nextInt (); int k = input.nextInt (); int[] a = new int[n]; int[] index = new int[n + 1]; for (int i = 0; i < n; i++) { a[i] = input.nextInt (); index [a[i]] = i; for (int i = 0; i 0; i++) { if (a[i] == n - i) { continue; a[index [n - i]] = a[i]; index [a[i]] = index[n - i]; a[i] = n - i; index [n - i] = i; %3D k--; for (int i = 0; i < n; i++) { System.out.print(a[i] + " ");

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Can you explain this code? It is "Largest Permutation" Hackerrank question's solution.

public class Solution {
public static void main(String[] args) {
Scanner input = new Scanner (System.in);
int n = input.nextInt ();
int k = input.nextInt ();
int[] a = new int[n];
int[] index = new int [n + 1];
for (int i = 0; i < n; i++) {
a[i] = input.nextInt ();
index [a[i]] = i;
%3D
for (int i = 0; i <n && k > 0; i++) {
if (a[i] == n - i) {
continue;
a[index [n - i]] = a[i];
index [a[i]] = index[n - i];
a[i] = n - i;
index [n - i] = i;
%3D
k--;
for (int i =
0; i < n; i++) {
System.out.print(a[i] + " ");
}
Transcribed Image Text:public class Solution { public static void main(String[] args) { Scanner input = new Scanner (System.in); int n = input.nextInt (); int k = input.nextInt (); int[] a = new int[n]; int[] index = new int [n + 1]; for (int i = 0; i < n; i++) { a[i] = input.nextInt (); index [a[i]] = i; %3D for (int i = 0; i <n && k > 0; i++) { if (a[i] == n - i) { continue; a[index [n - i]] = a[i]; index [a[i]] = index[n - i]; a[i] = n - i; index [n - i] = i; %3D k--; for (int i = 0; i < n; i++) { System.out.print(a[i] + " "); }
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