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refactor: review Swift codes for chapter_computational_complexity art… (#396)

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* refactor: review Swift codes for chapter_computational_complexity articles

* Update time_complexity.swift

* Update time_complexity.swift

---------

Co-authored-by: Yudong Jin <krahets@163.com>
This commit is contained in:
nuomi1
2023-03-03 21:22:23 +08:00
committed by GitHub
parent dc72f8b277
commit 17ff091a03
3 changed files with 10 additions and 9 deletions
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1
codes/swift/chapter_computational_complexity/leetcode_two_sum.swift
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@ -33,6 +33,7 @@ func twoSumHashTable(nums: [Int], target: Int) -> [Int] {
@main
enum LeetcodeTwoSum {
/* Driver Code */
static func main() {
// ======= Test Case =======
let nums = [2, 7, 11, 15]

10
codes/swift/chapter_computational_complexity/time_complexity.swift
View File

@ -88,7 +88,7 @@ func expRecur(n: Int) -> Int {
}
/* 对数阶（循环实现） */
func logarithmic(n: Int) -> Int {
func logarithmic(n: Double) -> Int {
var count = 0
var n = n
while n > 1 {
@ -99,7 +99,7 @@ func logarithmic(n: Int) -> Int {
}
/* 对数阶（递归实现） */
func logRecur(n: Int) -> Int {
func logRecur(n: Double) -> Int {
if n <= 1 {
return 0
}
@ -112,7 +112,7 @@ func linearLogRecur(n: Double) -> Int {
return 1
}
var count = linearLogRecur(n: n / 2) + linearLogRecur(n: n / 2)
for _ in 0 ..< Int(n) {
for _ in sequence(first: 0, next: { $0 < n - 1 ? $0 + 1 : nil }) {
count += 1
}
return count
@ -158,9 +158,9 @@ enum TimeComplexity {
count = expRecur(n: n)
print("指数阶（递归实现）的计算操作数量 = \(count)")
count = logarithmic(n: n)
count = logarithmic(n: Double(n))
print("对数阶（循环实现）的计算操作数量 = \(count)")
count = logRecur(n: n)
count = logRecur(n: Double(n))
print("对数阶（递归实现）的计算操作数量 = \(count)")
count = linearLogRecur(n: Double(n))