LeetCode Questions
- 51 n queens
- 52 n queens ii
- 53 maximum subarray
- 54 spiral matrix
- 55 jump game
- 56 merge intervals
- 57 insert interval
- 58 length of last word
- 59 spiral matrix ii
- 60 permutation sequence
- 61 rotate list
- 62 unique paths
- 63 unique paths ii
- 64 minimum path sum
- 65 valid number
- 66 plus one
- 67 add binary
- 68 text justification
- 69 sqrtx
- 70 climbing stairs
- 71 simplify path
- 72 edit distance
- 73 set matrix zeroes
- 74 search a 2d matrix
- 75 sort colors
- 76 minimum window substring
- 77 combinations
- 78 subsets
- 79 word search
- 80 remove duplicates from sorted array ii
- 81 search in rotated sorted array ii
- 82 remove duplicates from sorted list ii
- 83 remove duplicates from sorted list
- 84 largest rectangle in histogram
- 85 maximal rectangle
- 86 partition list
- 87 scramble string
- 88 merge sorted array
- 89 gray code
- 90 subsets ii
- 91 decode ways
- 92 reverse linked list ii
- 93 restore ip addresses
- 94 binary tree inorder traversal
- 95 unique binary search trees ii
- 96 unique binary search trees
- 97 interleaving string
- 98 validate binary search tree
- 99 recover binary search tree
- 100 same tree
63. Unique Paths II
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty space are marked as 1 and 0 respectively in the grid.
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