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// Given two non-negative integers, num1 and num2 represented as string, return the sum of num1 and num2 as a string.
// You must solve the problem without using any built-in library for handling large integers (such as BigInteger). You must also not convert the inputs to integers directly.
public String addStrings(String num1, String num2) {
char[] c1 = num1.toCharArray();
char[] c2 = num2.toCharArray();
StringBuilder sb = new StringBuilder();
int carry = 0;
def pairs_sum_to_zero(l):
for i, l1 in enumerate(l):
for j in range(i + 1, len(l)):
if l1 + l[j] == 0:
return True
return False
public class PairsSumToZero{
public boolean pairs_sum_to_zero(int[] arr) {
Map<Integer, Integer> map = new HashMap();
for (int i = 0; i < arr.length; i++) {
map.put(arr[i], i);
}
int x = 0 - arr[i];
if (map.containsKey(x)) {
if (map.get(x) == i) {
continue;
} else {
return true;
return false;
import random
def generate_random_password(length):
characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()'
password = ''.join(random.choice(characters) for _ in range(length))
return password
password_length = int(input("Enter the length of the password: "))
random_password = generate_random_password(password_length)
print("Randomly generated password:", random_password)
#Prompt the user to enter the length of the password
#Generate a random password of the given length
