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I have a vector like this: A = [1 2 1 1 1 4 5 0 0 1 2 0 2 3 2 2 2 0 0 0 0 33] I would like to count how many GROUPS of non zero elements it contains and save them. so I want to isolate: [1 2 1 1 1 4 5] [1 2] [2 3 2 2 2] [33] and then count the groups (they should be 4) :) Can you help me please? Thanks horchler To count your groups, a fast vectorized method using logical indexing is: count = sum(diff([A 0]==0)==1) This assumes that A is a row vector as in your example. This works with no zeros, all zeros, the empty vector, and several other test cases I tried. To obtain your groups of values

In Crystal Report using Visual Studio 2010, I am trying a to create a formula for the following scenario: x = any number (Fixed number of 8 digits, cant be less or greater) If Length of X is less than 8, pad the required amount of 0's in the front to make its length 8. Eg: X = 123 Result of Formula should be 00000123 X = 9 Result of Formula should be 00000009 Any help will be appreciated. Thanks in advance. ToText({table.field},"00000000") is more succinct. aMazing I got it Right("0000"&{MyFieldToPad},8) Works perfectly as I want it to. 来源： https://stackoverflow.com/questions/10989266/padding

How can I ignore ZeroDivisionError and make n / 0 == 0 ? Check if the denominator is zero before dividing. This avoids the overhead of catching the exception, which may be more efficient if you expect to be dividing by zero a lot. def weird_division(n, d): return n / d if d else 0 You can use a try / except block for this. def foo(x,y): try: return x/y except ZeroDivisionError: return 0 >>> foo(5,0) 0 >>> foo(6,2) 3.0 I think try except (as in Cyber's answer) is usually the best way (and more pythonic: better to ask forgiveness than to ask permission!), but here's another: def safe_div(x,y):

This question already has an answer here: How to nicely format floating numbers to String without unnecessary decimal 0? 22 answers For example I need 5.0 to become 5 , or 4.3000 to become 4.3 . soniccool Use DecimalFormat double answer = 5.0; DecimalFormat df = new DecimalFormat("###.#"); System.out.println(df.format(answer)); Marcin Szymczak You should use DecimalFormat("0.#") For 4.3000 Double price = 4.3000; DecimalFormat format = new DecimalFormat("0.#"); System.out.println(format.format(price)); output is: 4.3 In case of 5.000 we have Double price = 5.000; DecimalFormat format = new

Suggest solution for removing or truncating leading zeros from number(any string) by javascript,jquery. You can use a regular expression that matches zeroes at the beginning of the string: s = s.replace(/^0+/, ''); I would use the Number() function: var str = "00001"; str = Number(str).toString(); >> "1" Or I would multiply my string by 1 var str = "00000000002346301625363"; str = (str * 1).toString(); >> "2346301625363" Maybe a little late, but I want to add my 2 cents. if your string ALWAYS represents a number, with possible leading zeros, you can simply cast the string to a number by using

In my application, I get a number having leading zeros. I am trying to trim the leading zeros and get the actual number. I tried using /a switch which considers right side of the assignment as an arithmetic expression. So I tried: SET /a N = 00027 The above gave me the output of 23 which is the decimal equivalent of octal number 27 . Then I found this solution online. SET N = 00027 SET /a N = 1%N%-(11%N%-1%N%)/10 This seems working and is giving the output 27 . Is there much easier way to trim the leading zeros in a batch file? The method you found is very good. It supports numbers up to 99

This question already has an answer here: 'property: 0' or 'property: 0px' in CSS? 9 answers Googling for the answer to this question has proven difficult so I figured somebody here should know. Within CSS, I've seen zero pixels declared as simply '0' yet also as '0px'. mystyle { width: 0; } anotherstyle { width: 0px; } The minor problem with '0' is that if you change it to some non-zero value, you might forget to add the 'px'. And when making a value '0', you may forget to remove the 'px'. I want pure consistency in my code and little things like this drive me nuts. Does this really come down