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Leetcode Problem 62. Unique Paths

62. Unique Paths

Leetcode Solutions

Dynamic Programming Approach

  1. Initialize a 2D array dp with dimensions m by n and set all values to 1.
  2. Iterate over the array starting from the second row and second column.
  3. For each cell dp[i][j], set its value to dp[i - 1][j] + dp[i][j - 1].
  4. Continue this process until the bottom-right corner of the array is reached.
  5. Return the value at dp[m - 1][n - 1], which represents the number of unique paths to the bottom-right corner.
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Mathematical Combinatorics Approach

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