loops

问题 As stated in the title, I'm attempting to loop over an ArrayList of strings in a Jenkins Groovy Pipeline script (using scripted Pipeline syntax). Let me lay out the entire "problem" for you. I start with a string of filesystem locations separated by spaces: "/var/x /var/y /var/z ... " like so. I loop over this string adding each character to a temp string . And then when I reach a space, I add that temp string to the array and restart. Here's some code showing how I do this: def full_string =

问题 I have 472 matrices with 405 columns each (matrix1 , ... , matrix400) and want to have 472 new matrices with only the first 244 columns of that matrix. How can I do that? I tried: for (i in 1:472) { assign(paste("new_matrix",i,sep=""), matrix[[i]][,c(1:244)]) } I created the matrices by splitting one dataframe by one identifier (for the groups): for (i in 1:472){ assign(paste("matrix", i, sep=""), subset(data, ID==i)) } Somehow I cannot speak to each matrix but I have no clue how I can do

问题 Is there a way to simplify this code using a loop? set.seed(100) AL_INDEX <- sample(1:nrow(AL_DF), 0.7*nrow(AL_DF)) AL_TRAIN <- AL_DF[AL_INDEX,] AL_TEST <- AL_DF[-AL_INDEX,] AR_INDEX <- sample(1:nrow(AR_DF), 0.7*nrow(AR_DF)) AR_TRAIN <- AR_DF[AR_INDEX,] AR_TEST <- AR_DF[-AR_INDEX,] AZ_INDEX <- sample(1:nrow(AZ_DF), 0.7*nrow(AZ_DF)) AZ_TRAIN <- AZ_DF[AZ_INDEX,] AZ_TEST <- AZ_DF[-AZ_INDEX,] AL_DF, AR_DF & AZ_DF are data frames that have the same field structure, but different number of records.

问题 I have two lists of gene-lists for example gene_list_A $`STEARATE BIOSYNTHESIS I (ANIMALS)%HUMANCYC%PWY-5972` [1] "ELOVL1" "ACOT7" "ACSL1" "ACSL5" "ACSL4" "ELOVL6" "ACSL3" "ACOT2" "ACOT1" "ACSBG1" [11] "ACSBG2" "SLC27A2" "ACOT4" $`SUPERPATHWAY OF INOSITOL PHOSPHATE COMPOUNDS%HUMANCYC%PWY-6371` [1] "PI4K2B" "MTMR14" "PTEN" "INPPL1" "PIK3CD" "PIK3C2G" "PIK3CB" "PIK3C2A" "PIK3CG" "PIK3C2B" [11] "PLCZ1" "PPIP5K1" "PPIP5K2" "PIP5KL1" "PLCE1" "PIP4K2A" "PIP4K2B" "PIP4K2C" "SACM1L" "ITPK1" [21]

问题 in a string like "phone" i want to know the neighbour of the character 'o' in this case 'h' and 'n' i tryed with a String Iterator but that gives me either before or after and with charAt() i will be out of range by -1 or endless loop String s = textArea.getText(); for( int i = 0; i < s.length(); i++) { char ch = s.charAt(i); char tz = s.charAt(i--); System.out.print(ch); if(ch == 'n') { System.out.print(tz); break; } } 回答1: you could try something like this. Of course, you can still do

问题 so I am very new to coding and recently wrote a little program that involved R and sox. It looked like this file <- "test.mp3" testSox = paste("sox ",file," -n spectrogram -o ",file,".png stats",sep='') sox = system(testSox, intern = TRUE) print(sox) Now, instead of assigning the one file manually within the code, I would just like to have this code read through all the mp3s in a folder automatically. Is this possible? Any help would be greatly appreciated. Thanks! EDIT: Actually, I should

问题 I Have a list of folders on DVD that I would like to process one at a time. I am trying to use a FOR command to pass through information to set as the variable in a 2nd batch file. I am having the user input two variables, then I'd like a 3rd variable to come from my list of folders. Then run a 2nd batch file for each folder on the DVD: echo enter Drive letter set /p Drive= echo enter diskname set /p diskname= FOR /F %%i IN ('dir /ad /b e:\') DO set book=%%i call Load.bat %drive% %diskname%

问题 in a string like "phone" i want to know the neighbour of the character 'o' in this case 'h' and 'n' i tryed with a String Iterator but that gives me either before or after and with charAt() i will be out of range by -1 or endless loop String s = textArea.getText(); for( int i = 0; i < s.length(); i++) { char ch = s.charAt(i); char tz = s.charAt(i--); System.out.print(ch); if(ch == 'n') { System.out.print(tz); break; } } 回答1: you could try something like this. Of course, you can still do

问题 I have a data frame similar to the one created by the code below. In this example, measurements of 5 variables are taken on are 30 individuals represented by ID . The individuals can be separated by any of three grouping variables: GroupVar1,GroupVar2,GroupVar3 . For each of the grouping variables, I need to conduct an ANOVA for each of the 5 variables, and return the results of each (possibly onto a pdf or separate document?). How can I write a function, or use iteration, to handle this

问题 I will be generating a HTML table with data pulled from MySQL.The number of rows in my MySQL table are not fixed. <?php while($row=mysql_fetch_assoc($result)) { ?> <tr> <td><?php echo $row['col1'];?></td> <td><?php echo $row['col2'];?></td> </tr> <?php } ?> Now how do I have the table rows and table data elements assigned unique id ?? Another loop to generate them won't work as I can't set an exit condition for the new loop as number of rows are not fixed. Please guide me as to how to go