Java List
Problem Statement :
For this problem, we have 2 types of queries you can perform on a List:
1.Insert y at index x:
Insert
x y
2.Delete the element at index x:
Delete
x
Given a list, L, of N integers, perform Q queries on the list. Once all queries are completed, print the modified list as a single line of space-separated integers.
Input Format
The first line contains an integer, N(the initial number of elements in L).
The second line contains N space-separated integers describing L.
The third line contains an integer, Q (the number of queries).
The 2Q subsequent lines describe the queries, and each query is described over two lines:
If the first line of a query contains the String Insert, then the second line contains two space separated integers x y, and the value y must be inserted into L at index x.
If the first line of a query contains the String Delete, then the second line contains index x, whose element must be deleted from L.
Constraints
1<=N<=4000
1<=Q<=4000
Each element in is a 32-bit integer.
Output Format
Print the updated list L as a single line of space-separated integers.
Solution :
Solution in C :
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
public class Solution {
public static void main(String[] args) {
Scanner st = new Scanner(System.in);
int n = st.nextInt();
assert(n >= 1 && n <= 4000);
LinkedList L = new LinkedList();
for (int i = 0; i < n; i++) {
int x = st.nextInt();
L.add(i, x);
}
int q = st.nextInt();
assert(q >= 1 && q <= 4000);
for (int i = 0; i < q; i++) {
String s = st.next();
if (s.equals("Insert")) {
int x = st.nextInt();
int y = st.nextInt();
L.add(x, y);
} else {
int y = st.nextInt();
L.remove(y);
}
}
Iterator < Integer > Iterator = L.iterator();
boolean flag = false;
while (Iterator.hasNext()) {
if (flag) System.out.print(" ");
flag = true;
System.out.print(Iterator.next());
}
System.out.print("\n");
}
}
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