498. Diagonal Traverse LeetCode Solution | Easy Approach

Minimum Cost to Merge Stones
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Diagonal Traverse Given an m x n matrix mat, return an array of all the elements of the array in a diagonal order.

Example 1:

Input: mat = [[1,2,3],[4,5,6],[7,8,9]]
Output: [1,2,4,7,5,3,6,8,9]

Example 2:

Input: mat = [[1,2],[3,4]]
Output: [1,2,3,4]

Constraints:

  • m == mat.length
  • n == mat[i].length
  • 1 <= m, n <= 104
  • 1 <= m * n <= 104
  • -105 <= mat[i][j] <= 105

Diagonal Traverse Solutions

Time: O(n)
Space: O(n)

C++

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Java

 
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Python

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