Wipro Milestone 3 Coding Questions & Answers 2024 (Java/C++/Python)

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It is very important for all the contenders to before good before the Test. We have provided the sample Wipro Milestone 3 Coding Questions & Answers for your preparation process. With the help of this preparation good on the coding test & score good marks. If you qualify in this round only you may continue to attend the selection process, so read the article properly to get detailed information about the Previous Coding Questions

Wipro Milestone 3 Coding Questions & Answers

Q) You have been given a string S of length N. The given string is a binary string that consists of only 0’s and ‘1’s. Ugliness of a string is defined as the decimal number that this binary string represents.

 Example:

• “101” represents 5.
• “0000” represents 0.
• “01010” represents 10.

There are two types of operations that can be performed on the given string.

• Swap any two characters by paying a cost of A coins.
• Flip any character by paying a cost of B coins
• flipping a character means converting a ‘1’to a ‘0’or converting a ‘0’ to a ‘1’.

Initially, you have been given coins equal to the value defined in CASH. Your task is to minimize the ugliness of the string by performing the above mentioned operations on it. Since the answer can be very large, return the answer modulo 10^9+7.

Note:

• You can perform an operation only if you have enough number of coins to perform it.
• After every operation the number of coins get deducted by the cost for that operation.

Input Format

• The first line contains an integer, N, denoting the number of character in the string
• The next line contains a string, S, denoting the the binary string
• The next line contains an integer, CASH, denoting the total number of coins present initially
• Next will contains an integer, A, denoting the cost to swap two characters.
• Then the next line contains an integer, B, denoting the cost to flip a character.

Constraints

• 1 <= N <= 10^5
• 1< len(S)<= 10^5
• 1<=CASH <=10^5
• 1<=A<=10^5
• 1<=B<=10^5

Sample Input 1 :

4
1111
7
1
2

  Sample Output 1 :

1

  Explanation:

3 flips can be used to create “0001” which represents 1.

  Sample Input 2:

6
111011
7
1
3

  Sample Output 2:

7

  Explanation:

First swap 0 with the most significant 1, then use flip twice first on index one and then on index two “111011”=>”0111111″=>”001111″=>”000111″ the value represented is 7.

  Sample Input 3:

6
111011
7
3
2

  Sample Output 3:

3

 Explanation:

Flip the 3 most significant characters to get “000011” : the value represented by this string is 3.N

EXAMPLE PROGRAMS

C++ PROGRAM

#include<bits/stdc++.h>
using namespace std;
string s;
int n, cash, a, b;

void swapf ()
{
  int i;

  for (int a = 0; a < s.length (); a++) 
  if (s[a] == '1') 
  { 
      i = a; 
      break; 
      
  } 
  int j = s.length () - 1; 
  while (j > i)
    {
      if (cash < a)
	break;

      if (s[j] == '0')
	{
	  if (s[i] == '0')
	    i++;

	  else
	    {
	      swap (s[i], s[j]);
	      cash -= a;
	      j--;
	    }
	}
      else
	j--;
    }
}
void flipf ()
{
  int i;
  for (int a = 0; a < s.length (); a++) 
  if (s[a] == '1') 
  { 
      i = a; break; 
      
  } 
  while (cash >= b)
    {

      if (i == s.length ())
      break;

      if (s[i] == '1')
	{
	  s[i] = '0';
	  i++;
	  cash -= b;
	}
    }
}

int main ()
{
  cin >> n >> s >> cash >> a >> b;

  if (a < b)
    {
      swapf ();
      flipf ();
    }

  else
    {
      flipf ();
      swapf ();
    }

  cout << stoull (s, 0, 2);

}

JAVA PROGRAM

import java.util.*;
class Main
{
  static String str;
  static int cash, n, a, b;
  static void swapf ()
  {
    char s[] = str.toCharArray ();
    int i = 0;
    for (int a = 0; a < s.length; a++)
      if (s[a] == '1')
	{
	  i = a;
	  break;
	}
    int j = s.length - 1;
    while (j > i)
      {
	if (cash < a)
	  break;
	if (s[j] == '0')
	  {
	    if (s[i] == '0')
	      i++;
	    else
	      {
		char temp = s[i];
		s[i] = s[j];
		s[j] = temp;
		cash -= a;
		j--;
	      }
	  }
	else
	  j--;
      }
    str = new String (s);
  }
  static void flipf ()
  {
    char s[] = str.toCharArray ();
    int i = 0;

    for (int a = 0; a < s.length; a++)
      if (s[a] == '1')
	{
	  i = a;
	  break;
	}
    while (cash >= b)
      {
	if (i == s.length)
	  break;
	if (s[i] == '1')
	  {
	    s[i] = '0';
	    i++;
	    cash -= b;
	  }
      }
    str = new String (s);
  }

  public static void main (String[]args)
  {
    Scanner sc = new Scanner (System.in);
    n = sc.nextInt ();
    str = sc.next ();
    cash = sc.nextInt ();
    a = sc.nextInt ();
    b = sc.nextInt ();

    if (a < b)
      {
	swapf ();
	flipf ();
      }
    else
      {
	flipf ();
	swapf ();
      }
    System.out.println (Integer.parseInt (str, 2));
  }
}

Q): While playing an RPG game, you were assigned to complete one of the hardest quests in this game. There are n monsters you’ll need to defeat in this quest. Each monster i is described with two integer numbers – poweri and bonusi. To defeat this monster, you’ll need at least poweri experience points. If you try fighting this monster without having enough experience points, you lose immediately. You will also gain bonusi experience points if you defeat this monster. You can defeat monsters in any order.

The quest turned out to be very hard – you try to defeat the monsters but keep losing repeatedly. Your friend told you that this quest is impossible to complete. Knowing that, you’re interested, what is the maximum possible number of monsters you can defeat?

Input:

• The first line contains an integer, n, denoting the number of monsters. The next line contains an integer, e, denoting your initial experience.
• Each line i of the n subsequent lines (where 0 ≤ i < n) contains an integer, poweri, which represents power of the corresponding monster.
• Each line i of the n subsequent lines (where 0 ≤ i < n) contains an integer, bonusi, which represents bonus for defeating the corresponding monster.

Output

• 2

Example Programs:

JAVA PROGRAM

import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

class Main
{
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int n = s.nextInt();
        int exp = s.nextInt();

        int monst[] = new int[n];
        int bonus[] = new int[n];

        for (int i = 0; i < n; i++) {
            monst[i] = s.nextInt();
        }
        for (int i = 0; i < n; i++) {
            bonus[i] = s.nextInt();
        }

        class Monster {
            private final int power, bonus;
            public Monster(int power, int bonus){
                this.power = power;
                this.bonus = bonus;
            }
        }

        Monster[] monsters = new Monster[n];

        for(int i = 0; i < n; i++)
            monsters[i] = new Monster(monst[i], bonus[i]);

        Arrays.sort(monsters, Comparator.comparingInt(m -> m.power));

        int count = 0;

        for(Monster m: monsters){
            if(exp < m.power) break;
            exp += m.bonus;
            ++count;
        }
        System.out.println(count);
    }
}

n = int(input())
lev = int(input())
p = []
b = []
a = []
ans = 0
for i in range(n):
   p.append(int(input()))
for j in range(n):
   b.append(int(input()))
for k in range(n):
   a.append([p[k], b[k]])
a.sort()
for z in a:
   if z[0] > lev:
       break
   lev += z[1]
   ans += 1
print(ans)

Q) Henry is extremely keen on history and every one of the ages of his family. He does a ton of exploration and understands that he has plummeted from the incomparable Amaya line. After a ton of looking through old records and the most recent records of the general public, he can discover all the parent-kid connections in his family right from the extraordinary ruler Ming of the tradition to himself.

These connections are given in the structure of a direct exhibit where the emperor is at the main position and his kids are at pos (2i + 1) and (2i + 2)

This is the pattern followed throughout.

Henry needs to sort out every one of the kin of individual X from the information.

Write a program for Henry to figure out all the siblings of person X from the data.
Return the sorted list of all of Henry’s siblings.

If no sibling return {-1}

• input 1: N, the length of the array
• input2: An array representing the ancestral tree
• input 3: X, the person whose siblings are sought.
• output – return the array of all siblings in increasingly sorted order.

Example 1 :

input 1: 5
input 2: {1,2,3,4,5}
input 3: 1
output: {-1}
Explanation: x is the root of the tree and has no siblings

Example 2 :

input 1: 6
input 2: {1,2,3,4,5,6}
input 3: 5
output: {4,6}
Explanation: {2,3 } are the children of {1}. {4,5,6 } are the children of {2,3}, thus the siblings of x= 5 are {4,6}

JAVA PROGRAM

import java.util.*;
 
public class Main
{
    Node root;
    static class Node
    {
        int data;
        Node left, right;
    
        Node (int data) 
        {
            this.data = data;
            this.left = null;
            this.right = null;
        } 
    } 

    public static void main (String[]args)
    {
        Main t2 = new Main ();
        Scanner sc = new Scanner (System.in);
        int length = sc.nextInt ();
        int arr[] = new int[length];
    
        for (int i = 0; i < length; i++)
        {
            arr[i] = sc.nextInt ();
        }
        int target = sc.nextInt ();
        t2.root = t2.insertLevelOrder (arr, t2.root, 0);
    
        Set < Integer > sets = t2.levelOrderBottom (t2.root, target);
        sets.remove (target);
        System.out.println (sets);
    }   
    public static Node insertLevelOrder (int[]arr, Node root, int i) 
    {
        if (i < arr.length)
        {
            Node temp = new Node (arr[i]);
            root = temp;
            root.left = insertLevelOrder (arr, root.left, 2 * i + 1);
            root.right = insertLevelOrder (arr, root.right, 2 * i + 2);
        }
        return root;
    }

    public Set < Integer > levelOrderBottom (Node root, int target)
    {
        if (root == null)
        {
        	return null;
        }
        Queue < Node > q = new LinkedList <> ();
        q.offer (root);
    
        while (!q.isEmpty ())
        {
            int qsize = q.size ();
            Set < Integer > temp = new HashSet <> ();
            
            for (int i = 0; i < qsize; i++)
	        {
                Node child = q.poll ();
                temp.add (child.data);
                
                if (child.left != null)
	            {
                    q.offer (child.left);
                }
                if (child.right != null)
	            {
                    q.offer (child.right);
                }
            }
            if (temp.contains (target))
                return temp;
        }
        return null;
    }
}

PYTHON PROGRAM

def identify_siblings(tree_array, x):
    tree_len = len(tree_array)
    index = tree_array.index(x)
    level = 0
    start_index = level
    number_of_nodes = 0
    while start_index < tree_len:
    	end_index = pow(2, level) + start_index
    	if x in tree_array[start_index:end_index]:
    		break
    	level += 1
    	start_index = (2 * start_index) + 1
    final_array = tree_array[start_index:end_index]
    final_array.remove(x)
    return final_array if final_array else [-1]

n = int(input())
arr = []
for i in range(n):
    arr.append(int(input()))
x = int(input())
print(identify_siblings(arr, x))

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int N, ans, price;
    cin>>N;
   
    int arr[N];
    
    for (int i = 0; i < N; i++)
        cin>>arr[i];
    
    price = 0;
    ans = 0;
    for (int i = 0; i < N; i++)
    {
        price = price + arr[i];
        if (ans > price)
            {
                ans = price;
            }
    }
    cout << ans;
}

C PROGRAM:

#include<stdio.h>
int main()
{
    int N, ans, price;
    scanf("%d", &N);
   
    int arr[N];
    
    for (int i = 0; i < N; i++)
        scanf("%d", &arr[i]);
    
    price = 0;
    ans = 0;
    for (int i = 0; i < N; i++)
    {
        price = price + arr[i];
        if (ans > price)
            {
                ans = price;
            }
    }
    printf("%d", ans);
}

PYTHON PROGRAM

n = int(input())
arr = []
for i in range(n):
   arr.append(int(input()))
min = 0
for i in range(1, n):
   if sum(arr[:i]) < min:
       min = sum(arr[:i])
print(min)

Wipro Milestone 3 Coding Questions With Solutions For C

Question: Lazy String

Problem Statement-:  Anish is the laziest person you can ever see. He is tasked to write the name of the winner in a game where two people take part. And he just writes the longest common subsequence over there, so that with minimum change or no backspace he can edit the name to the winner’s name.

For two given names, you have to predict what Anish will write in his computer before the start of the name. If there are more than two longest subsequences possible, write the one with less lexicographic value.

Input Format:

• Two lines including two strings of names (All with capital letters)

Output Format:

• A single line with the lexicographically smallest possible longest common subsequence.

Sample Input:

ABCD
BACD

Sample Output:

ACD

Explanation:

ACD and BCD these are the two possible biggest substring

C++ PROGRAM

#include <bits/stdc++.h>
using namespace std;
string s1,s2,s3;
 
int fun(int i,int j,int k,string s)
{
    if(i==s1.length()||j==s2.length())
    {
        if(s3.length()==s.length()) s3=min(s,s3);
        else if(s3.length()<s.length()) s3=s;
        return k;
    }
    if(s1[i]==s2[j]) return fun(i+1,j+1,k+1,s+s1[i]);
    return max(fun(i+1,j,k,s),fun(i,j+1,k,s));
}
 
int main()
{
    cin>>s1>>s2;
    fun(0,0,0,"");
    cout<<s3;
}

JAVA PROGRAM

import java.util.Scanner;
public class Application19 {
	public static String s1,s2,s3="";
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		 s1 = sc.nextLine();
		 s2 = sc.nextLine();
		 fun(0,0,0,"");
		 System.out.println(s3);
	}
	private static int fun(int i, int j, int k, String s) {
		// TODO Auto-generated method stub
		if(i==s1.length() || j==s2.length()) {
			if(s3.length()==s.length()) {
				if(s3.compareTo(s)>0) {
					s3=s;
				}
			}
			else if(s3.length()<s.length()) {
				s3=s;
			}
			return k;	
		}
		if(s1.charAt(i)==s2.charAt(j)) {
			return fun(i+1,j+1,k+1,s+s1.charAt(i));
		}
		return Math.max(fun(i+1,j,k,s), fun(i,j+1,k,s));
	}

}

PYTHON PROGRAM

s1=input()
s2=input()
s3=""
def fun(i,j,k,s):
    global s1
    global s2
    global s3
    if i==len(s1) or j==len(s2):
        if len(s3)==len(s):
            s3=min(s,s3)
        elif len(s3)<len(s):
            s3=s
        return k 
    if s1[i]==s2[j]:
        return fun(i+1,j+1,k+1,s+s1[i])
    return max(fun(i+1,j,k,s),fun(i,j+1,k,s))
    
fun(0,0,0,"")
print(s3)

Question: Corona for Computer

Problem Statement-: Every decimal number can be changed into its binary form. Suppose your computer has it’s own CoronaVirus, that eats binary digits from the right side of a number. Suppose a virus has 6 spikes, it will eat up 6 LSB binary digits in your numbers.

You will have a bunch of numbers, and your machine will have a virus with n spikes, you have to calculate what will be the final situation of the final numbers.

Input Format:

• First line, a single Integer N
• Second line N space separated integers of the bunch of values as array V
• Third line a single integer n, the number of spikes in Corona for Computer

Output Format:

• Single N space separated integers denoting the final situation with the array v.

Sample Input:

5

1 2 3 4 5

2

Sample Output:

0 0 0 1 1

Explanation: 

5 is 101 in binary, when you cut the last two binary digits, its 1.

C++ PROGRAM

#include <bits/stdc++.h>
using namespace std;
 
int main()
{
    int N,n;cin>>N;
    vector<int> v(N);
    for(int i=0;i<N;i++) cin>>v[i];
    cin>>n;
    for(auto i:v)
    cout<<(i>>n)<<" ";
}

JAVA PROGRAM

import java.util.Scanner;

public class Application16 {

 public static void main(String[] args) {
  Scanner sc = new Scanner(System.in);
  int n = sc.nextInt();
  int arr[]=new int[n];
  for(int i=0;i<n;i++) {
   arr[i] = sc.nextInt();
  }
  int k = sc.nextInt();
  for(int i:arr) {
   System.out.print((i>>k));
   System.out.print(" ");
  }
 }

}

PYTHON PROGRAM

N=int(input())
a=list(map(int,input().split()))
n=int(input())
s=""
for i in a:
    s+=str(i>>n)+" "
print(s)

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