LeetCode 3210: Find the Encrypted String Solution
Master LeetCode problem 3210 (Find the Encrypted String), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
3210. Find the Encrypted String
Problem Explanation
Explanation
To solve this problem, we can iterate over each character in the input string s, find the k-th character after it in a cyclic manner, and build the encrypted string. We can achieve this by taking the ASCII value of the character, adding k to it, and then wrapping around if needed. Finally, we convert the ASCII value back to the character and append it to the result string.
Time Complexity: O(n), where n is the length of the input string s.
Space Complexity: O(n), for storing the encrypted string.
Solution Code
class Solution {
public String findEncryptedString(String s, int k) {
StringBuilder encrypted = new StringBuilder();
for (char c : s.toCharArray()) {
int encryptedChar = (c - 'a' + k) % 26 + 'a';
encrypted.append((char)encryptedChar);
}
return encrypted.toString();
}
}Try It Yourself
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