1143. Longest Common Subsequence
Problem
Given two strings text1 and text2, return the length of their longest common subsequence. If there is no common subsequence, return 0.
Example
Input: text1 = "abcde", text2 = "ace"
Output: 3
[1] Code (22. 06. 05)
Need to Retry -> LCS 구현 실패
// Runtime: 13 ms
// Memory Usage: 46.2 MB
// Ref : https://leetcode.com/submissions/detail/714926831
class Solution {
public int longestCommonSubsequence(String text1, String text2) {
int t1l = text1.length();
int t2l = text2.length();
int[][] dp = new int[t1l + 1][t2l + 1];
for (int i = 1; i <= t1l; i++) {
for (int j = 1; j <= t2l; j++) {
if (text1.charAt(i - 1) == text2.charAt(j - 1)) {
dp[i][j] = 1 + dp[i - 1][j - 1];
} else {
dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - 1]);
}
}
}
return dp[t1l][t2l];
}
}
Review
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LCS 관련 문제를 이전에도 풀어봤지만 기억이 나지 않아
정답을 보고 다시 풀었다.
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다음번에는 꼭 기억나길 !