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Review Swift codes (#1150)

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* feat(swift): review for chapter_computational_complexity

* feat(swift): review for chapter_data_structure

* feat(swift): review for chapter_array_and_linkedlist

* feat(swift): review for chapter_stack_and_queue

* feat(swift): review for chapter_hashing

* feat(swift): review for chapter_tree

* feat(swift): add codes for heap article

* feat(swift): review for chapter_heap

* feat(swift): review for chapter_graph

* feat(swift): review for chapter_searching

* feat(swift): review for chapter_sorting

* feat(swift): review for chapter_divide_and_conquer

* feat(swift): review for chapter_backtracking

* feat(swift): review for chapter_dynamic_programming

* feat(swift): review for chapter_greedy

* feat(swift): review for utils

* feat(swift): update ci tool

* feat(swift): trailing closure

* feat(swift): array init

* feat(swift): map index
This commit is contained in:
nuomi1
2024-03-20 21:15:39 +08:00
committed by GitHub
parent 300a781fab
commit 7359a7cb4b
55 changed files with 293 additions and 224 deletions
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14
codes/swift/chapter_dynamic_programming/min_path_sum.swift
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@@ -51,16 +51,16 @@ func minPathSumDP(grid: [[Int]]) -> Int {
var dp = Array(repeating: Array(repeating: 0, count: m), count: n)
dp[0][0] = grid[0][0]
// 状态转移：首行
for j in stride(from: 1, to: m, by: 1) {
for j in 1 ..< m {
dp[0][j] = dp[0][j - 1] + grid[0][j]
}
// 状态转移：首列
for i in stride(from: 1, to: n, by: 1) {
for i in 1 ..< n {
dp[i][0] = dp[i - 1][0] + grid[i][0]
}
// 状态转移：其余行和列
for i in stride(from: 1, to: n, by: 1) {
for j in stride(from: 1, to: m, by: 1) {
for i in 1 ..< n {
for j in 1 ..< m {
dp[i][j] = min(dp[i][j - 1], dp[i - 1][j]) + grid[i][j]
}
}
@@ -75,15 +75,15 @@ func minPathSumDPComp(grid: [[Int]]) -> Int {
var dp = Array(repeating: 0, count: m)
// 状态转移：首行
dp[0] = grid[0][0]
for j in stride(from: 1, to: m, by: 1) {
for j in 1 ..< m {
dp[j] = dp[j - 1] + grid[0][j]
}
// 状态转移：其余行
for i in stride(from: 1, to: n, by: 1) {
for i in 1 ..< n {
// 状态转移：首列
dp[0] = dp[0] + grid[i][0]
// 状态转移：其余列
for j in stride(from: 1, to: m, by: 1) {
for j in 1 ..< m {
dp[j] = min(dp[j - 1], dp[j]) + grid[i][j]
}
}