LeetCode 2745: Construct the Longest New String Solution
Master LeetCode problem 2745 (Construct the Longest New String), a medium 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.
2745. Construct the Longest New String
Problem Explanation
Explanation:
To construct the longest new string without having "AAA" or "BBB" as a substring, we need to carefully choose the order in which we concatenate the given strings. The key idea is to always alternate between the "AB" strings and the "A" or "B" strings. This way, we can avoid creating substrings "AAA" or "BBB".
We can start by concatenating the "AB" strings and then interleave the "A" and "B" strings to maximize the length of the final string. If we have more "A" or "B" strings, we can add them at the end.
Solution Code
class Solution {
public int constructMaxLength(int x, int y, int z) {
int countAB = Math.min(x, y);
int maxLen = countAB * 2 + z;
if (x > countAB) {
x -= countAB;
maxLen += Math.min(x, z) * 2;
} else if (y > countAB) {
y -= countAB;
maxLen += Math.min(y, z) * 2;
}
return maxLen;
}
}Try It Yourself
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