Convert minutes into a human readable format

问题

quick question.

Is there a smarter/sleeker way to convert minutes into a more readable format, showing only the most significant digit?

I'm using Android Studio's Java.

public String MinutesToHumanReadable(Long minutes) {

...

}

ie

2 mins = "2 mins"
45 mins = "45 mins"
60 mins = ">1 hr"
85 mins = ">1 hr"
120 mins = ">2 hrs"
200 mins = ">3 hrs"
1500 mins = ">1 day"

My code is very cumbersome, sloppy, and somewhat unreadable.

public String MinutesToHumanReadable(long minutes) {
    String sReturn = "";

    if (minutes > 515600) {
        sReturn = "> 1 yr";

    } else if (minutes > 43200) {
        sReturn = (minutes / 43200) + " mths";

    } else if (minutes > 10080) {
        sReturn = (minutes / 10080) + " wks";

    } else if (minutes > 1440) {
        sReturn = (minutes / 1440) + " days";

    } else if (minutes > 60) {
        sReturn = (minutes / 60) + " hrs";

    } else {
        //<60
        sReturn = minutes + " mins";

    }

    return sReturn;
}

Many thanks, J

回答1:

Well it is possible, I figure it out and I am proud of it! :) Note that you can easily add any other value without changing the method itself, only by changing values in these two arrays. For example, if "years" are not enough for you, you can add "decades" and "centuries"...

This code also adding "s" letter at the end, if you have more than 1 of output value.

public class SuperMinutesChangerClass {
    public static int[] barriers = {1, 60, 60*24, 60*24*7, 60*24*365, Integer.MAX_VALUE};
    public static String[] text = {"min", "hr", "day", "week", "year"};

    public static String minutesToHumanReadable(int minutes){
        String toReturn = "";
        for (int i = 1; i < barriers.length; i++) {
            if (minutes < barriers[i]){
                int ammount = (minutes/barriers[i-1]);
                toReturn = ">" + (ammount) + " " + text[i-1];
                if (ammount > 1){
                    toReturn += "s";
                }
                break;
            }
        }
        return toReturn;
    }         
}

Sample input :

    public static void main(String[] args) {
        System.out.println(minutesToHumanReadable(10));
        System.out.println(minutesToHumanReadable(60));
        System.out.println(minutesToHumanReadable(61));
        System.out.println(minutesToHumanReadable(121));
        System.out.println(minutesToHumanReadable(8887));
        System.out.println(minutesToHumanReadable(9999743));
    }  

Output is :

>10 mins
>1 hr
>1 hr
>2 hrs
>6 days
>19 years

回答2:

I would use some dummy if/else if/else statements :

public static String convert(int minutes) {
  if(minutes < 60) {
    return String.format("%d mins", minutes);
  } else if(minutes < 1440) { //1 day = 1440 minutes
    return String.format("%d hrs, %d mins", minutes/60, minutes%60);
  } else {
    return String.format("%d days", minutes / 1440);
  }
}

Test

System.out.println(convert(84));

Output :

1 hrs, 24 mins

回答3:

maybe this helps you

private static final int MINUTES_PER_HOUR = 60;
private static final int MINUTES_PER_DAY = MINUTES_PER_HOUR * 24;

public String minutesToHumanReadable(long minutes) {
    if (minutes > MINUTES_PER_DAY) {
        return String.format("> %d days", minutes / MINUTES_PER_DAY);
    } else if (minutes > MINUTES_PER_HOUR) {
        return String.format("> %d hours", minutes / MINUTES_PER_HOUR);
    }

    return String.format("%d minutes", minutes);
}

来源：https://stackoverflow.com/questions/19636583/convert-minutes-into-a-human-readable-format