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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Subarray Division
  5. Discussions

Subarray Division

  • vknakul43
     + 0 comments

    Sliding window technique O(n)

    JAVA

        public static int birthday(List<Integer> s, int d, int m) {
        int n = s.size();
        int count = 0;
        int sum = 0;
        
        for (int i = 0; i < m; i++) {
            sum += s.get(i);
        }
        
        if (sum == d)
        count++;
        
        for (int i = m; i < n; i++) {
            sum += s.get(i);
            sum -= s.get(i - m);
            if (sum == d)
            count++;
        }
        
        return count;
    }