Android-day date conversion Sunday period

function function: Day date conversion Sunday period
Input data:
String: Date Yyyy-mm-dd.
Integer: Number of steps.
Output data:
int[]: Number of steps (7 days, Sunday to Saturday), final uniform (0-100) value, null-1 padding.
ArrayList<Pair<String, String>>: [Week, date number] (7 days, Sunday to Saturday), empty arrays are populated with [NULL,-1].

    /** * Convert Day Data * Input is an array of [date, data], converted to 7-day data combination, missing days are null-padded, default from Sunday to Monday, * weekly from Sunday to Monday [7 Day Data (1000), 7 day description (Sunday, Mon 1 2)]. * * @param DS Data * 7 Day Data converted @return  */    Privatearraylist<pair<int[], arraylist<pair<string, string>>>>Todaydata(Arraylist<pair<string, integer>> DS) {arraylist<pair<int[], arraylist<pair<string, string>>>> result =NewArraylist<> (); arraylist<string> dates =NewArraylist<> ();//Date arrayarraylist<integer> steps =NewArraylist<> ();//number of steps array         for(inti =0; I < ds.size ();            ++i) {Dates.add (Ds.get (i). first);        Steps.add (Ds.get (i). second); } arraylist<integer> Suns = Getsunarray (dates);//Get Sunday dataarraylist<arraylist<pair<string, string>>> alldates =NewArraylist<> ();//7 day week date formatarraylist<int[]> allsteps =NewArraylist<> ();//7 days/week steps        //Weekly data record         for(inti =0; I < suns.size (); ++i) {arraylist<pair<string, string>> weekdates =NewArraylist<> ();int[] Weeksteps =New int[7];intSunno = Suns.get (i);//Sunday serial number             for(intj =0; J <7; J + +) {intno = Sunno-j;if(No >=0) {pair<string, string> PS = Getweekwithno (Dates.get (no));                    Weekdates.add (PS);                WEEKSTEPS[J] = Steps.get (no); }Else{//Blank datapair<string, string> PS = pair.create ("NULL","-1");                    Weekdates.add (PS); WEEKSTEPS[J] =-1; }            }//Mean value            intmax = Getmaxvalue (weeksteps);if(max = =0) {max =1; } for(intj =0; J < Weeksteps.length; ++J) {Weeksteps[j] = weeksteps[j] * -/MAX;            } alldates.add (Weekdates);        Allsteps.add (weeksteps); }//remaining date record, which is not included in the weekly data Sunday        if(Suns.get (Suns.size ()-1) < (Ds.size ()-1) {arraylist<pair<string, string>> weekdates =NewArraylist<> ();int[] Weeksteps =New int[7];intElweekno = Suns.get (Suns.size ()-1) +7; for(intj =0; J <7; J + +) {intno = Elweekno-j;if(No <= (ds.size)-1) {pair<string, string> PS = Getweekwithno (Dates.get (no));                    Weekdates.add (PS);                WEEKSTEPS[J] = Steps.get (no); }Else{//Blank datapair<string, string> PS = pair.create ("NULL","-1");                    Weekdates.add (PS); WEEKSTEPS[J] =-1; }            }//Mean value            intmax = Getmaxvalue (weeksteps); for(intj =0; J < Weeksteps.length; ++J) {Weeksteps[j] = weeksteps[j] * -/MAX;            } alldates.add (Weekdates);        Allsteps.add (weeksteps); }//Final data form         for(inti = alldates.size ()-1; I >=0;        -i) {Result.add (Pair.create (Allsteps.get (i), alldates.get (i))); }returnResult }/** * Maximum value * * @param Array array * @return Maximum */    Private Static int Getmaxvalue(int[] array) {intMaxValue = array[0]; for(inti =1; i < Array.Length; i++) {if(Array[i] > MaxValue)            {maxValue = Array[i]; }        }returnMaxValue; }/** * Date data found Sunday location * * @param days Date list * @return Sunday Position array */    PrivateArraylist<integer>Getsunarray(Arraylist<string> days) {SimpleDateFormat SDF =NewSimpleDateFormat ("EEE", locale.english); Arraylist<integer> Posarray =NewArraylist<> (); for(inti =0; I < days.size ();            ++i) {Date date = Mdatemanager.getdatefromstr (Days.get (i)); String weekday = Sdf.format (date);if(Weekday.equals ("Sun") {Posarray.add (i); }        }returnPosarray; }/** * Convert date string to [week statement, date number] * * @param Day date * @return [Week statement, date number] */    PrivatePair<string, string>Getweekwithno(String Day)        {Date date = Mdatemanager.getdatefromstr (day); SimpleDateFormat SDF =NewSimpleDateFormat ("EEE", locale.english);        String weekday = Sdf.format (date);        Calendar calendar = Calendar.getinstance ();        Calendar.settime (date); String no = Calendar.get (calendar.day_of_month) +"";returnPair.create (Weekday, no); }

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Android-day date conversion Sunday period