From 5850f6d636af38f3edbac46ef4e8e81a8271b8f9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E4=BD=99=E6=9D=9C=E6=9E=97?= Date: Sun, 15 Aug 2021 15:34:34 +0800 Subject: [PATCH 1/2] =?UTF-8?q?=E6=B7=BB=E5=8A=A00059.=E8=9E=BA=E6=97=8B?= =?UTF-8?q?=E7=9F=A9=E9=98=B5II=20Swift=20=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- problems/0059.螺旋矩阵II.md | 55 +++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/problems/0059.螺旋矩阵II.md b/problems/0059.螺旋矩阵II.md index e46dae6d..6df8c83d 100644 --- a/problems/0059.螺旋矩阵II.md +++ b/problems/0059.螺旋矩阵II.md @@ -302,6 +302,61 @@ func generateMatrix(n int) [][]int { } ``` +Swift: + +```swift +func generateMatrix(_ n: Int) -> [[Int]] { + var result = [[Int]](repeating: [Int](repeating: 0, count: n), count: n) + + var startRow = 0 + var startColumn = 0 + var loopCount = n / 2 + let mid = n / 2 + var count = 1 + var offset = 1 + var row: Int + var column: Int + + while loopCount > 0 { + row = startRow + column = startColumn + + for c in column ..< startColumn + n - offset { + result[startRow][c] = count + count += 1 + column += 1 + } + + for r in row ..< startRow + n - offset { + result[r][column] = count + count += 1 + row += 1 + } + + for _ in startColumn ..< column { + result[row][column] = count + count += 1 + column -= 1 + } + + for _ in startRow ..< row { + result[row][column] = count + count += 1 + row -= 1 + } + + startRow += 1 + startColumn += 1 + offset += 2 + loopCount -= 1 + } + + if (n % 2) != 0 { + result[mid][mid] = count + } + return result +} +``` From 71ee2d5d0bc9dba8f2d83156c05ea17a5353036a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E4=BD=99=E6=9D=9C=E6=9E=97?= Date: Sun, 15 Aug 2021 21:35:27 +0800 Subject: [PATCH 2/2] =?UTF-8?q?=E6=B7=BB=E5=8A=A00203.=E7=A7=BB=E9=99=A4?= =?UTF-8?q?=E9=93=BE=E8=A1=A8=E5=85=83=E7=B4=A0=20Swift=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- problems/0203.移除链表元素.md | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/problems/0203.移除链表元素.md b/problems/0203.移除链表元素.md index a2c6e90d..9235d47e 100644 --- a/problems/0203.移除链表元素.md +++ b/problems/0203.移除链表元素.md @@ -304,6 +304,34 @@ var removeElements = function(head, val) { }; ``` +Swift: + +```swift +/** + * Definition for singly-linked list. + * public class ListNode { + * public var val: Int + * public var next: ListNode? + * public init() { self.val = 0; self.next = nil; } + * public init(_ val: Int) { self.val = val; self.next = nil; } + * public init(_ val: Int, _ next: ListNode?) { self.val = val; self.next = next; } + * } + */ +func removeElements(_ head: ListNode?, _ val: Int) -> ListNode? { + let dummyNode = ListNode() + dummyNode.next = head + var currentNode = dummyNode + while let curNext = currentNode.next { + if curNext.val == val { + currentNode.next = curNext.next + } else { + currentNode = curNext + } + } + return dummyNode.next +} +``` +