Given a boolean matrix of size RxC where each cell contains either 0 or 1, find the row numbers of row (0-based) which already exists or are repeated.
Example 1:
Input:
R = 2, C = 2
matrix[][] = {{1, 0},
{1, 0}}
Output:
1Explanation:
Row 1 is duplicate of Row 0.
Example 2:
Input:
R = 4, C = 3
matrix[][] = {{ 1, 0, 0},
{ 1, 0, 0},
{ 1, 0, 0},
{ 0, 0, 0}}Output:
1 2Explanation:
Row 1 and Row 2 are duplicates of Row 0.
Your Task:
You dont need to read input or print anything. Complete the function repeatedRows() that takes the matrix as input parameter and returns a list of row numbers which are duplicate rows.
Expected Time Complexity: O(R * C) Expected Auxiliary Space: O(R*C)
Constraints:
1 ≤ R ≤ 1000
1 ≤ C ≤ 20 0 ≤ matrix[i][j] ≤ 1
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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