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4SumClass solution (Object):def foursum (self, Nums, target):Nums.sort ()results = []Self.findnsum (Nums, Target, 4, [], results)return resultsdef findnsum (self, nums, target, N, result, results):If Len (nums) # Solve 2-sumif N = = 2:L,r = 0,len (nums)-1While L If NUMS[L] + nums[r] = = target:Results.append (Result + [nums[l], Nums[r])L + = 1R-= 1While L L + = 1While R > L and nums[r] = = Nums[r + 1]:R-= 1Elif Nums[l] + Nums[r] L + = 1ElseR-= 1ElseFo

Given an array S of n integers, find three integers in S such so the sum is closest to a give n number, target. Return the sum of the three integers. You may assume this each input would has exactly one solution. For example, given array S = {-1 2 1-4}, and target = 1. The sum is closest to the target is 2. (-1 + 2 + 1 = 2).With Leetcode 3Sum, add a target to maintain the nearest value.defthree_sum_closest (nums, target) ans= Nums[0] + nums[1] + nums[2] a=nums.sort a.length.times do|i|J, K

Because the topic can also be done so do not put the name of the game, do a memo it ~First on Ida, the first instruction in the previous 401000 skipped, repairing the stack balance.And then found that the function of the validation is as follows, you can see here is mainly to inverse algorithm.At that time, the roommate is also doing this problem, late 10 minutes to solve, stuck in my analysis of the place, I must remember what you see is the income.The algorithm is smoothed, at the same time ru

(intI=t; (Long Long) {prime[i]*prime[i]Long Longsum=prime[i]+1, X=prime[i]; while(Sumif(remain%sum==0) DFS (now*x,remain/sum,i+1); X*=prime[i],sum+=x; } }}intNintMain () {//Freopen ("Test.in", "R", stdin);Shake50000); while(scanf("%d", n)!=eof) {num=0; Dfs1N1); Sort (ans+1, ans+num+1), n=0; for(intI=1; iif(ans[i]!=ans[i-1]) ans[++n]=ans[i];printf("%d\n", n);if(n>=1)printf("%d", ans[1]); for(intI=2; iprintf("%d", Ans[i]);if(num)puts(""); }ret

("Sorry,you has not enough moneY! Please remove somethings!\n ") sum = 0TotalMoney = 1000for i in shoppingcartprice:sum = sum + int (i) Totalmoney = Tot ALMONEY-SUMIF Totalmoney > 0:a = input ("Does really want to buy tins?" Please enter Yes or no!\n ") if a = = ' Yes ': print (" Successful,wish you a Happy shopping!\n ") exit () El Se:exit () else:print ("Sorry,you has not enough money! Please remove somethings!\n ") while True:print (" Your shoppin

6. Data Filtering The sixth part is data filtering. The use and, or, if not three conditions are used together, the values smaller than and equal to are used to filter the data and count and sum the data. Similar to the filter functions in excel, countifs and sumifs functions. Filter by conditions (and, or, not) The Excel Data Directory provides the "filter" function to filter data tables according to different conditions. Mysql uses the WHERE clause to filter data, and works with the sum and

Profile Analysis of python program and pythonprofile Analysis Operating System: CentOS7.3.1611 _ x64 Python version: 2.7.5 Problem description 1. The program developed by Python is very slow to use. I want to determine which code segment is relatively slow; 2. The program developed by Python occupies a large amount of memory during use and wants to determine which code segment is causing it; Solution Use profile to analyze cpu usage Profile Introduction: https://docs.python.org/2/library/profile

Python cannot achieve true multicore parallelism because of its own nature, but there are some third-party libraries that better simulate parallel operations in multi-core environments, such as PP packets and multiprocessing, so which can make the most of multi-core?Here I make a simple contrast, first put the conclusion: multiprocessing is the best.In the actual measurement process, my CPU is 4 core 8 threads, multiprocessing can take full advantage of the multi-core computing advantages, so th

instantly track the 3D position and vibration of your smartphone without programming. After that, you can modify the Python code for the demo and do something that you think is cool. (For example, hide your iphone under your predecessor's mattress to see if you can find some rules.) ）BlueMix IoT2 DemoI am a programmer, how to raise salary level?In addition to learning a new language, there is a strategy to learn and master more niche enterprise systems. For example, you can learn big data syste

max-left in row 7th to record the largest sub-array of the current subscript I 第8-14 the right half A[mid_1..high], similar to the left half. Here, the loop variable J of the For Loop of the 第10-14 line starts from mid+1 and increments until it reaches high, so that every sub-array it examines has a a[mid+1..j] form. Finally, line 15th returns the subscript max-left and Max-right, delimits the boundary of the largest subarray across the midpoint, and returns the Subarray a[max-left. Max-right]

1: First2: Knowledge SummaryThere are two types of Python loops, one is the for...in loop, and each of the elements in the list or tuple is iterated in turn to see an example:names = [‘Michael‘, ‘Bob‘, ‘Tracy‘]for name in names: print nameExecuting this code will print names each element in turn:michaelbobtracy so for x in ... The loop is to put each element into a variable x , and then executes the indented block of the statement. For example, if we want to calculate the sum of 1-10 integ

") to get the path-level file name Enter the cell where you want to get the file name =mid (A1,find ("*", Substitute (A1, "", "*", LEN (A1)-len (Substitute (A1, "", ""))) +1,len (A1)) (4), Custom function Public Function name () Dim filename as String filename = Activeworkbook.name name = filename End Function 19, how to obtain the maximum number of days one months : "=day (DATE (2002,3,1)-1)" or "=day (b1-1)", B1 "2001-03-01 The sum of the items in the data area that contain a charac

hard teachers also ushered in the final exam each semester: Examinee's platoon, examination room table signing production, student achievement statistical analysis, student transcript production ... How can we improve the efficiency of these jobs? The following is a tutorial area for the efficiency of prawns prepared by the tutorial, hoping to help teachers. pre-Test preparation: This is not only applicable to the register, but also suitable for grade leader, teach the teacher t

=sum (sheet1:sheet3! D4) 18. Get the name of the sheet (1), definition name: Name =get. DOCUMENT (88) (2), definition name: Path =get. DOCUMENT (2) (3), in the A1 input =cell ("filename") to get the path-level file name Enter the cell where you want to get the file name =mid (A1,find ("*", Substitute (A1, "", "*", LEN (A1)-len (Substitute (A1, "", ""))) +1,len (A1)) (4), Custom function Public Function name () Dim filename as String filename = Activeworkbook.name name = filename

("{\" angle\ ": \" "+result[0]+" \ ", \" msg\ ": \" "+result[2]+" \ "}");System.out.println ("Rotation angle:" +result[0]+ "\ T Prize ID:" +result[1]+ "\ t prompt message:" +result[2]);}Draw and return to angles and awardsPublic object[] Award (object[][] Prizearr) {Probability arrayInteger obj[] = new Integer[prizearr.length];for (int i=0;iObj[i] = (Integer) prizearr[i][4];}Integer Prizeid = Getrand (obj); Get the prize ID based on probabilityRotation angleint angle = new Random (). Nextint ((

, "male")--C2 to C351 region (a total of 350 people) the number of men; 9, Excellent rate: =sum (k57:k60)/55*100 10. Passing Rate: =sum (k57:k62)/55*100 11, Standard deviation: =stdev (k2:k56)-K2 to K56 region (55 people) of the performance fluctuations (the smaller the number, indicating that the students of the class differences in performance, on the contrary, that the class exists polarization); 12, the condition sum: =sumif (b2:b56, "male", k

excel2003 version of the friend, there is no averageif function, and how to use the rest of the formula to replace the AverageIf function? The following two solutions are available: First, enter the formula: =average (IF (A2:A10=A2,B2:B10)), press the Ctrl+shfit+enter key combination to end, that is, the array formula. Explanation: First use if to judge, if satisfies the condition to return the corresponding value, does not satisfy returns false, then uses the average function to calculate t

formula, jump down in the list of Excel formulas and calculate the dependent formula. Excel then returns a reference to the formula and completes the calculation. When you finish the formula in the list, Excel moves to the next formula and continues until you calculate formulas for all formulas in the list. With the calculation formula in this new procedure, Excel will only be able to calculate formulas in the workbook once. Some other calculation changes should be noted as follows: • Reent