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def integer_to_roman(num):
    arabic = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
    roman = ["M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"]

    if num <= 0 or num > 1000:
        print("Invalid input. Please enter a positive integer between 1 and 1000.")
        return

    roman_numeral = ""

    for i in range(len(arabic)):
        while num >= arabic[i]:
            roman_numeral += roman[i]
            num -= arabic[i]

    return roman_numeral

# Example usage:
input_number = 18
result = integer_to_roman(input_number)

print(f"Roman numeral equivalent: {result}")


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TCS CODEVITA✅
PYTHON3

def toggle(num):
    result = ""
    for bit in num:
        if bit == "0":
            result += "1"
        else:
            result += "0"
    return result

def get_max_sum(arr, k):
    max_val = max(arr)
    max_index = arr.index(max_val)
    left = max(0, max_index-k)
    right = min(len(arr)-1, max_index+k)
    
    selected = arr[left:max_index+1] + arr[max_index:right+1] 
    arr = [x for x in arr if x not in selected]
    
    return sum(selected), arr

# Input 
arr = list(map(int, input().split()))  
a1, b1 = input().split()
a2, b2 = input().split()
k = int(input())

sum1, sum2 = 0, 0

while arr:
    s1, arr = get_max_sum(arr, k) 
    sum1 += s1
    
    if not arr:
        break
        
    s2, arr = get_max_sum(arr, k)
    sum2 += s2
    
if sum1 > sum2:
    a1 = toggle(a1)
    b2 = toggle(b2)
else:
    a2 = toggle(a2) 
    b1 = toggle(b1)

xor1 = int(a1, 2) ^ int(b1, 2)  
xor2 = int(a2, 2) ^ int(b2, 2)

if xor1 > xor2:
    print("Rahul")
elif xor2 > xor1:
    print("Rupesh")
else:
    print("both")

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TCS codevita
Python3

@coding_000 ✅

def convert(expression):
    stack = []
    tokens = expression.split()

    for token in reversed(tokens):
        if is_operand(token):
            stack.append(int(token))
        elif is_operator(token):
            if len(stack) < 2:
                return float('-inf')

            operand2 = stack.pop()
            operand1 = stack.pop()

            if token == "+":
                stack.append(operand1 + operand2)
            elif token == "-":
                stack.append(operand1 - operand2)
            elif token == "*":
                stack.append(operand1 * operand2)
            elif token == "/":
                stack.append(operand1 / operand2)
            elif token == "^":
                stack.append(operand1 ** operand2)
            elif token == "%":
                stack.append(operand1 % operand2)

    if len(stack) != 1:
        return float('-inf')

    return stack.pop()


def is_operand(token):
    return token.lstrip('-').isdigit()


def is_operator(token):
    return token in {"+", "-", "*", "/", "^", "%"}


def main():
    prefix = input()
    word_map = {
        "zero": "0", "one": "1", "two": "2", "three": "3", "four": "4",
        "five": "5", "six": "6", "seven": "7", "eight": "8", "nine": "9",
        "mul": "*", "add": "+", "sub": "-", "div": "/", "rem": "%", "pow": "^"
    }

    words = prefix.split()
    real_prefix = ""

    for word in words:
        if word in word_map:
            real_prefix += word_map[word] + " "
            continue

        small_words = word.split("c")
        for s in small_words:
            if s:
                if s not in word_map:
                    print("expression evaluation stopped invalid words present")
                    return
                real_prefix += word_map[s]

        real_prefix += " "

    infix = convert(real_prefix)
    if infix == float('-inf'):
        print("expression is not complete or invalid")
    else:
        print(int(infix))


if name == "main":
    main()


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TCS CODEVITA SOLUTIONS
PYTHON3

No more shuffle code

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import numpy as np

def find_widest_valley(n, A, B):
    def surface_equation(x):
        return sum(np.sin(a*x + b) for a, b in zip(A, B))

    def find_local_maxima():
        maxima = []
        for i in range(1, n-1):
            if surface_equation(i-1) < surface_equation(i) > surface_equation(i+1):
                maxima.append(i)
        return maxima

    def find_valley_width(left, right):
        return right - left

    maxima = find_local_maxima()
    widest_valley_width = 0
    widest_valley_index = 0

    for i in range(len(maxima)-1):
        left_maxima = maxima[i]
        right_maxima = maxima[i+1]
        current_valley_width = find_valley_width(left_maxima, right_maxima)

        if current_valley_width > widest_valley_width:
            widest_valley_width = current_valley_width
            widest_valley_index = left_maxima + 1

    return widest_valley_index

# Input parsing
n = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

# Output
print(find_widest_valley(n, A, B))


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Water Resources Code
TCS CODEVITA
PYTHON

def toggle(num):
    result = ""
    for bit in num:
        if bit == "0":
            result += "1"
        else:
            result += "0"
    return result

def get_max_sum(arr, k):
    max_val = max(arr)
    max_index = arr.index(max_val)
    left = max(0, max_index-k)
    right = min(len(arr)-1, max_index+k)
    
    selected = arr[left:max_index+1] + arr[max_index:right+1] 
    arr = [x for x in arr if x not in selected]
    
    return sum(selected), arr

# Input 
arr = list(map(int, input().split()))  
a1, b1 = input().split()
a2, b2 = input().split()
k = int(input())

sum1, sum2 = 0, 0

while arr:
    s1, arr = get_max_sum(arr, k) 
    sum1 += s1
    
    if not arr:
        break
        
    s2, arr = get_max_sum(arr, k)
    sum2 += s2
    
if sum1 > sum2:
    a1 = toggle(a1)
    b2 = toggle(b2)
else:
    a2 = toggle(a2) 
    b1 = toggle(b1)

xor1 = int(a1, 2) ^ int(b1, 2)  
xor2 = int(a2, 2) ^ int(b2, 2)

if xor1 > xor2:
    print("Rahul",end="")
elif xor2 > xor1:
    print("Rupesh",end="")
else:
    print("both",end="")


WHO IS LUCKY CODE✅

TCS CODEVITA
PYTHON3
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#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int max_efficiency(vector<int>& numbers) {
    sort(numbers.begin(), numbers.end());
    int n = numbers.size();
    int max_efficiency = 0;

    for (int i = 0; i < n; ++i) {
        int efficiency = 0;
        for (int j = i; j < n; ++j) {
            efficiency += numbers[j] * (j - i + 1);
        }

        max_efficiency = max(max_efficiency, efficiency);
    }

    return max_efficiency;
}

int main() {
    // Input parsing
    int n;
    cin >> n;
    vector<int> numbers(n);
    for (int i = 0; i < n; ++i) {
        cin >> numbers[i];
    }

    // Output
    int result = max_efficiency(numbers);
    cout << (result >= 0 ? result : 0) << endl;

    return 0;
}

Sports day codee in C+++

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Sport Day Code
Tcs codevita

Fully passsd ✅✅✅✅✅

#include <iostream>
#include <vector>
#include <algorithm>

int max_points(std::vector<int>& chocolates, int initial) {
    std::sort(chocolates.begin(), chocolates.end());
    int points = 0;
    int max_points = 0;

    for (int i = 0; i < chocolates.size(); ++i) {
        if (chocolates[i] <= initial) {
            initial -= chocolates[i];
            points++;
            max_points = std::max(max_points, points);
        } else {
            break;
        }
    }

    return max_points;
}

int main() {
    int n;
    std::cin >> n; // Number of chocolates
    std::vector<int> chocolates(n);

    for (int i = 0; i < n; ++i) {
        std::cin >> chocolates[i];
    }

    int initial_chocolates;
    std::cin >> initial_chocolates; // Initial chocolates Bittu has

    int result = max_points(chocolates, initial_chocolates);
    std::cout << result;

    return 0;
}

Chocolates code ✅✅

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Hamming Distance
Java
TCS Codevita


import java.util.Scanner;

public class HammingDistance {

    public static void main(String[] args) {
      
        Scanner scanner = new Scanner(System.in);

        int T = scanner.nextInt();

        while (T-- > 0) {
            String binaryString = scanner.next();
            int A = scanner.nextInt();
            int B = scanner.nextInt();

            int res = calculateHammingDistance(binaryString, A, B);

            if(res == -1){
                System.out.print("INVALID");
            }
            else{
                System.out.print(res);
            }
        }
       
    }

   public static int calculateHammingDistance(String binaryString, int A, int B)  {
        int res = 0;

        for (int i = 0; i < binaryString.length() - 1; i++) {
            char ch = binaryString.charAt(i);

            if(ch != '1' && ch != '0'){
                return -1;
            }

            if(ch == '1'){
                if(A < B){
                    if(i-1 >= 0 && binaryString.charAt(i-1) == '0'){
                        res += A;
                    }
                    else if(i+1 <= (binaryString.length()-1) && binaryString.charAt(i+1) == '0'){
                        res += B;
                        i++;
                    }
                }
                else{
                    if(i+1 <= (binaryString.length()-1) && binaryString.charAt(i+1) == '0'){
                        res += B;
                        i++;
                    }
                    else if( i-1 >= 0 &&binaryString.charAt(i-1) == '0'){
                        res += A;
                    }
                }
            }
        }

        return res;
    }
}

Hamming Distance
Java
TCS Codevita

from sys import maxsize


def help(string):
    n = len(string)
    st = set()
    st.add(string[0])
    for i in range(1, n):
        if string[i] == string[i - 1]:
            continue
        if string[i] in st:
            return False
        st.add(string[i])
    return True


def minSwaps(string, l, r, cnt, minm):
    if l == r:
        if help(string):
            return cnt
        else:
            return maxsize
    for i in range(l + 1, r + 1, 1):
        string[i], string[l] = string[l], string[i]
        cnt += 1
        x = minSwaps(string, l + 1, r, cnt, minm)
        string[i], string[l] = string[l], string[i]
        cnt -= 1
        y = minSwaps(string, l + 1, r, cnt, minm)
        minm = min(minm, min(x, y))
    return minm


n = int(input())
alist = []
for i in input().split():
    alist.append(i)
ans = minSwaps(alist, 0, n - 1, 0, maxsize)
print(ans)


Art_shift code
TCS CODEVITA✅
Python3

def ans(numbers):
    numbers.sort()
    n = len(numbers)
    magic = 0

    for i in range(n):
        van = 0
        priority = 1

        for j in range(i, n):
            van += numbers[j] * priority
            priority += 1

            if van > magic:
                magic = van
    return magic

numbers = list(map(int, input().split()))

result = ans(numbers)
if result > 0:
    print(result, end="")
else:
    print(0, end="")


Sports Day

Tcs codevita

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