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Problem: 97. 交错字符串

👨‍🏫 参考题解

class Solution {public boolean isInterleave(String s1, String s2, String s3) {int m = s1.length();int n = s2.length();if(s3.length() != m + n) return false;boolean[][] dp = new boolean[m+1][n+1];dp[0][0] = true;for(int i = 1; i <= m && s1.charAt(i - 1) == s3.charAt(i-1); i++) // 不相符直接终止dp[i][0] = true;for(int i = 1; i <= n && s2.charAt(i - 1) == s3.charAt(i-1); i++) // 不相符直接终止dp[0][i] = true;for(int i = 1; i <= m; i++){for(int j = 1; j <= n; j++){dp[i][j] = (dp[i-1][j] && s3.charAt(i+j-1) == s1.charAt(i-1))|| (dp[i][j-1] && s3.charAt(i+j-1) == s2.charAt(j-1));}}return dp[m][n];}
}