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63_Unique_Paths_II

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README.md
leetcode.com/swift/DS_ALGO_PRAC.playground/Sources/swift
- 63_Unique_Paths_II.swift

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`@@ -775,6 +775,7 @@ BFS, DFS, Dijkstra, Floyd–Warshall, Bellman-Ford, Kruskal, Prim's, Minimum Spa`
`775`	`775`	`\|59\| [1277. Count Square Submatrices with All Ones](https://tinyurl.com/y6a82a9r) \| [Python](https://tinyurl.com/wu6rdaw/1277_Count_Square_Submatrices_with_All_Ones.py), [Swift](https://tinyurl.com/wuja3c4/1277_Count_Square_Submatrices_with_All_Ones.swift)\| [Must](https://tinyurl.com/y4sa8zgk) \| Medium \| --- \|`
`776`	`776`	`\|60\| [418. Sentence Screen Fitting](https://tinyurl.com/yhtu7lld) \| [Swift](https://tinyurl.com/wuja3c4/418_Sentence_Screen_Fitting.swift)\| [Art 1](https://tinyurl.com/yh4xt84c) \| Medium \| --- \|`
`777`	`777`	`\|61\| [1937. Maximum Number of Points with Cost](https://tinyurl.com/yhh6dmeh) \| [Swift](https://tinyurl.com/wuja3c4/1937_Maximum_Number_of_Points_with_Cost.swift)\| [Art 1](https://tinyurl.com/yg6hs4md) \| Medium \| --- \|`
	`778`	`+\|61\| [63. Unique Paths II](https://tinyurl.com/yjh69kzh) \| [Swift](https://tinyurl.com/wuja3c4/63_Unique_Paths_II.swift)\| --- \| Medium \| --- \|`
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	`1`	`+class Solution {`
	`2`	`+ func uniquePathsWithObstacles(_ obstacleGrid: [[Int]]) -> Int {`
	`3`	`+ var dp = Array(repeating: Array(repeating: 0, count: obstacleGrid[0].count + 1), count: obstacleGrid.count + 1)`
	`4`	`+ for i in 0..<obstacleGrid.count {`
	`5`	`+ for j in 0..<obstacleGrid[0].count {`
	`6`	`+ if obstacleGrid[i][j] == 0 {`
	`7`	`+ if i == 0 && j == 0 {`
	`8`	`+ dp[i + 1][j + 1] = 1`
	`9`	`+ } else {`
	`10`	`+ dp[i + 1][j + 1] = dp[i][j + 1] + dp[i + 1][j]`
	`11`	`+ }`
	`12`	`+ }`
	`13`	`+ }`
	`14`	`+ }`
	`15`	`+ return dp.last!.last!`
	`16`	`+ }`
	`17`	`+}`

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