如何对字符串格式的时间数组求和
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【中文标题】如何对字符串格式的时间数组求和【英文标题】:How to sum array of time Duration Which is in string format 【发布时间】:2018-06-04 11:30:14 【问题描述】:我有一个格式如下的字符串数组,
let sample_array = ["05:30","06:20","04:20","09:40"]
当我们将所有string
转换为DATE
格式后,我们如何从这个数组中找到总时间。
【问题讨论】:
你所说的“总时间”是什么意思? 数组就像 ["04:30" , "04:00"] ,所以总小时 08:30。像那样@AhmadF 你能解释一下如何添加持续时间@Moritz 你尝试了什么??? 我只是尝试将字符串转换为日期格式并尝试@YagneshDobariya 【参考方案1】:我认为您可以跳过将字符串转换为日期以获得所需的输出:
let sample_array = ["05:30","06:20","04:20","09:40"]
var hours:Int = 0
var minutes:Int = 0
for timeString in sample_array
let components = timeString.components(separatedBy: ":")
let hourComp = Int(components.first ?? "0") ?? 0
let minComp = Int(components.last ?? "0") ?? 0
hours += hourComp
minutes += minComp
hours += minutes/60
minutes = minutes%60
let hoursString = hours > 9 ? hours.description : "0\(hours)"
let minsString = minutes > 9 ? minutes.description : "0\(minutes)"
let totalTime = hoursString+":"+minsString
【讨论】:
成功了。对不起,我不能赞成你的回答。至少需要 15 名声望。 =D,谢谢@Puneet @Thug__ 如果它适合你,你应该接受它作为有效答案【参考方案2】:对于您的情况,我建议不要将其视为日期来处理它。您可以通过实现以下功能来获得所需的结果:
func getTotalTime(_ array: [String]) -> String
// getting the summation of minutes and seconds
var minutesSummation = 0
var secondsSummation = 0
array.forEach string in
minutesSummation += Int(string.components(separatedBy: ":").first ?? "0")!
secondsSummation += Int(string.components(separatedBy: ":").last ?? "0")!
// converting seconds to minutes
let minutesInSeconds = secondsToMinutes(seconds: secondsSummation).0
let restOfSeconds = secondsToMinutes(seconds: secondsSummation).1
return "\(minutesSummation + minutesInSeconds):\(restOfSeconds)"
// https://***.com/questions/26794703/swift-integer-conversion-to-hours-minutes-seconds
func secondsToMinutes (seconds : Int) -> (Int, Int)
return ((seconds % 3600) / 60, (seconds % 3600) % 60)
因此:
let array = ["20:40" , "20:40"]
let result = getTotalTime(array)
print(result) // 41:20
【讨论】:
【参考方案3】:从问题和 cmets 看来,您正在尝试从给定数组中计算总时间(以小时和分钟为单位)。
let sample_array = ["05:30","06:20","04:20","09:40"]
func getTime(arr: [String]) -> Int
var total = 0
for obj in arr
let comp = obj.split(separator: ":")
var hours = 0
var minutes = 0
if let hr = comp.first, let h = Int(String(hr))
hours = h * 60
if let mn = comp.last, let min = Int(String(mn))
minutes = min
total += hours
total += minutes
return total
let totalTime = getTime(arr: sample_array)
print(totalTime)
let hours = totalTime/60
let minutes = totalTime%60
print("\(hours) hours and \(minutes) minutes")
您还可以进一步计算日、月和年。
我希望这是你想要的。
【讨论】:
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