recurring alarm

Android handles events of the Alarm clock Alarm, androidalarm The previous blog posts have been constantly sharing Phone-related knowledge, which is also a knowledge note. However, it is inevitable that you will encounter problems in other modules during your work, therefore, when solving these problems, we can easily record and share these knowledge. Some knowledge is hard to understand, and it is easy to

Given integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part was repeating, enclose the repeating part in parentheses.For example,Given numerator = 1, denominator = 2, return "0.5".Given numerator = 2, denominator = 1, return "2".Given numerator = 2, denominator = 3, return "0. (6) ".Problem Solving Ideas:A variety of critical values will appear in the test, so you need to convert numerator and denominator to long, and then

Frequently asked questions about multithreading during an interview:Today, at the time of the test, the following code throws an exception: Java.lang.IllegalThreadStateExceptionpublic static void Main (string[] args) throws exception{ Test_thread temp = new Test_thread (); Test_thread Temp1 = new Test_thread (); Thread t = new Thread (temp); thread T1 = new Thread (TEMP1); for (int i=0;iChange it down to the bottom so it runs smoothly.public static voi

decimal number Plus, and then determine whether the remainder is repeated, if the remainder is repeated, the decimal will be repeated from the next start atnum = num *Ten; -Frac.append (num/den); -num = num%den; - //If the remainder appears before, it indicates that there is a loop, where the last occurrence is the current position is the part of the Loop - if(Map.containskey (num)) { - //separating the non-circular and cyclic part

Given integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part was repeating, enclose the repeating part in parentheses.Example 1:Input:numerator = 1, denominator = 2Output: "0.5"Example 2:Input:numerator = 2, denominator = 1Output: "2"Example 3:Input:numerator = 2, denominator = 3Output: "0. (6)"Class Solution:def Fractiontodecimal (self, numerator, denominator): "" ": Type Numerator:int:typ E denominator:int:rtype

Given two integers representing the numerator and denominator of a fraction, return the fraction in string format. If the fractional part is repeating, enclose the repeating part in parentheses. For example, Given Numerator = 1, Denominator = 2, return "0.5 ".Given Numerator = 2, Denominator = 1, return "2 ".Given Numerator = 2, Denominator = 3, return "0. (6 )".Credits:Special thanks to @ Shangrila for adding this problem and creating all test cases. Idea: Take 2/7 as an example: Class solution

Very scary question, I used to feel that it was Microsoft's bug.The problem is this: there is a ComboBox control in the TabItem under my TabControl, and for some reason the TabControl selectionchanged event needs to be performed, but in a more bizarre way, Whenever I select an item in the ComboBox, that is, when the SelectionChanged event of the ComboBox changes, TabControl's SelectionChanged event is executed at the same time, baffled, and later found the relevant reason on the Internet, As fol

Ideas: 1, the molecular 0 can be returned in advance2, the result is positive and negative judgment3. Array out of bounds (minimum negative number divided by -1)4, for the beginning of the encounter decimal to add ".", there is a decimal can expand dividend, for whether there is a repetition of the place to judge whether its dividend is repeated!!!For the ABS () function, remember to convert the number to a long integer, and then use ABS (), otherwise the minimum negative numbers are not convert

The result is a loop after the decimal point, with parentheses enclosing the part of the loop that appears.Find out the loop part of the idea:Maintains a unordered_mapThe idea of division:Remain stores the remainder of each division, while (remain) loop, each remain *= in the loop, res + = Remain/denominator, remain = remain% denominator.1 classSolution {2 Public:3 stringFractiontodecimal (intNumerator,intdenominator) {4 if(!numerator)return "0";5 stringres ="";6 if(

Title Description:Given integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part was repeating, enclose the repeating part in parentheses.For example,Given numerator = 1, denominator = 2, return "0.5".Given numerator = 2, denominator = 1, return "2".Given numerator = 2, denominator = 3, return "0. (6) ".is to give a divisor and dividend a string expression that returns a decimal. Requirements: For Infinite loop decimals, the b

) * 10;}2.1record the start (next index) of each remaindermap.put (remainder, res.length ());2.2get the circular part out.res= res.substring (0, Beg) + "(" + res.substring (Beg, Res.length ()) + ")"; mistake:directly use Math.Abs over Integer.Note:when Integer=Math.min_value, Math.Abs (math.min_value) has no effect!!! Otherwise, it could cause overflow!!!Fix:store the integer into aLong, then use ABS over theLong.LongDividend =Math.Abs (numerator);Longdivisor = Math.Abs (denominator);Solution: P

(); BooleanIsnegative=false; if(Numerator ) {isnegative= !isnegative; } if(denominator) {isnegative= !isnegative; } if(isnegative) {res.append (‘-‘); } LongReminder = num%den; Res.append (Num/den); intSize =res.length (); BooleanHascycle =false; while(Reminder! = 0 ){ if(Container.isempty ()) {Res.append (‘.‘); Size++; } if(!Container.containskey (Reminder)) {Size++; LongNewquoient = reminder*10/den; Res.append (

Notes:1. When numerator is 0, return "0". Check This corner case, because 0/-5 would return-0.2. Use a long long int for DIVD and divs, mainly for divs. Because when divs = Int_min, Fabs (divs) is large.3. Forget to rest *= to get the next level.1 classSolution {2 Public:3 stringFractiontodecimal (intNumerator,intdenominator) {4 if(Numerator = =0)return "0";5 stringresult;6 if(Numerator 0^ Denominator 0) result ="-";7 Long Long intDIVD = Fabs (numerator), div

The string you'll received as a parameter has too many characters. Your job is toRemove characters from the string in the following order:1. Find the smallest i such that the i-th character and the (i+1)-th character of the string is same.2. If There is no such I, end the process.3. Remove the i-th and the (i+1)-th character of the string, and repeat from 1.For example, if the parameter is "AYQQYJJJ", she'll change the string as follows: "AYQQYJJJ", "AYYJJJ", AJ JJ "," AJ ".Return the resulting

avoid the problem in 1, so the error value in this way.Case that might hang:0/111/90;1/2147483647 (Integer.max_value);-1/2147483647;1/-2147483638;The code is as follows: PublicString Fractiontodecimal (intA1,intA2) { if(A1 = = 0 | | a2 = = 0)return"0"; StringBuilder SB=NewStringBuilder (); Sb.append ((A1>0) ^ (a2>0)? "-":""); LongA = Math.Abs ((Long) A1); Longb = Math.Abs ((Long) A2); Sb.append (Math.Abs (a/b)); A= (a% b) * 10; if(A! = 0) Sb.append ("."); MapNewHashmap(); Map.put (NewLon

Given integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part was repeating, enclose the repeating part in parentheses.For example, Given numerator = 1, denominator = 2, return "0.5". Given numerator = 2, denominator = 1, return "2". Given numerator = 2, denominator = 3, return "0. (6) ". Credits:Special thanks to @Shangrila for adding this problem and creating all test cases.1 Public classSolution {2

One of the count, if there is a repetition of the remainder of the cycle is the beginning of the festival.Use Hashtable to record the position and insert parentheses.Note negative numbers.classSolution { Public: stringFractiontodecimal (intNumerator,intdenominator) { intSIGN1 = Numerator >=0?1: -1; intSIGN2 = Denominator >=0?1: -1; Long Longnum = (Long Long) numerator; Long LongDen = (Long Long) denominator; Num=ABS (num); Den=abs (DEN); Long Longd = num/den; Long Longrem = num%den; Un

result at - //after you determine the symbol, you can convert two numbers to integer operations, but for negative (1 - LL N; - LL m; -n=numerator0?-Numerator:numerator; -m=denominator0?-Denominator:denominator; in - ints=-1;//flag Cycle section start position to + -LL intpart=n/m; then=n%m; *Ret+=itos (Intpart);//Integer Part $ if(n==0)returnret;Panax Notoginseng - inttag=1;//The tag indicates whether the Loop section was found, when the tag==1 indic

again.The syntax structure is $ ("#div"). Stop ();//Stop the current animation and continue with the next animation $ ("#div"). Stop (true);//Clears all animations of the element $ ("#div"). Stop (false, true); Let the current animation go directly to the end state and continue to the next animation $ ("#div"). Stop (true, true);//Clears all animations of the element so that the current animation reaches the end state directlyThe idea of this scheme is simple: when I mouseover, triggering the c

　　 task debugging Implementation Test Two: Property TargetObject: Specifies the object property that performs the task Targetmethod: Specifies the method that performs the task, which must be the parameterless method class= " Org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean "> class= "Org.springframework.scheduling.quartz.CronTriggerFactoryBean" > Reprint to: http://my.oschina.net/lhplj/blog/213773A quartz crontrigger expression is divided into seven sub-expressions