Code Review (Easy): Flexible Log Filtering

Story

Lena noticed that developers at ReviewThat Labs were struggling to find specific build logs because the current search only allowed exact matches. She decided to build a small utility that supports placeholders for unknown parts of a filename or tag. Eva Harrington reviewed the plan and emphasized that the tool must handle both single-letter placeholders and sequences of any length. For instance, a search for "build-*" should correctly identify "build-v1" and "build-final-version", while "data-?" would match "data-1" but ignore "data-10".

Your Task

Read the story and code, then decide if the code is ready for production or needs improvement.

Hints

What would block an approval? Give me a hint.

Check out Next Topic: Tracing Project Tags

const n = s.length;
  const m = p2.length;

// DP with rolling arrays: prev = dp[i-1][*], cur = dp[i][*]
  let prev: boolean[] = new Array(m + 1).fill(false);
  let cur: boolean[] = new Array(m + 1).fill(false);

prev[0] = true;
  for (let j = 1; j <= m; j++) {
    if (p2[j - 1] === '*') prev[j] = prev[j - 1];
    else prev[j] = false;
  }

for (let i = 1; i <= n; i++) {
    cur.fill(false);
    cur[0] = false; // non-empty s cannot match empty pattern
    for (let j = 1; j <= m; j++) {
      const pc = p2[j - 1];
      if (pc === '*') {
        // '*' matches empty (cur[j-1]) or one/more (prev[j])
        cur[j] = cur[j - 1] || prev[j];
      } else {
        cur[j] = prev[j - 1] && (pc === '?' || pc === s[i - 1]);
      }
    }
    // swap prev and cur
    const temp = prev;
    prev = cur;
    cur = temp;
  }

return prev[m];
}