duplicate-removal

I have an array that I populate with 6 randomly generated numbers. First it generates a random number between 1 and 49 and then checks it against the numbers in the array. If it finds a duplicate it should generate a random number again and then perform the check once again. If there are no duplicates then the number is added to the array. Here's the code: public void populateArray() { for(int i = 0; i < numberLine.length; i++) { randomNumber = 1 + randomGen.nextInt(49); for(int j = 0; j < i; j++) { if (numberLine[j] == randomNumber) { i--; } else { continue; } } if(i >= 0) { numberLine[i] =

I'm fairly new to programming in general and MATLAB and I'm having some problems with removing values from matrix. I have matrix tmp2 with values: tmp2 = [... ... 0.6000 20.4000 0.7000 20.4000 0.8000 20.4000 0.9000 20.4000 1.0000 20.4000 1.0000 19.1000 1.1000 19.1000 1.2000 19.1000 1.3000 19.1000 1.4000 19.1000 ... ...]; How to remove the part where on the left column there is 1.0 but the values on the right one are different? I want to save the row with 19.1. I searched for solutions but found some that delete both rows using histc function and that's not what i need. Thanks I saw the

Say i have duplicate rows in my table and well my database design is of 3rd class :- Insert Into tblProduct (ProductId,ProductName,Description,Category) Values (1,'Cinthol','cosmetic soap','soap'); Insert Into tblProduct (ProductId,ProductName,Description,Category) Values (1,'Cinthol','cosmetic soap','soap'); Insert Into tblProduct (ProductId,ProductName,Description,Category) Values (1,'Cinthol','cosmetic soap','soap'); Insert Into tblProduct (ProductId,ProductName,Description,Category) Values (1,'Lux','cosmetic soap','soap'); Insert Into tblProduct (ProductId,ProductName,Description,Category)

Consider the following list of tuples: val input= List((A,B), (C,B), (B,A)) and assuming that the elements (A,B) and (B,A) are the same and therefore are duplicates, what is the efficient way (preferably in Scala) to eliminate duplicates from the list above. That means the desired output is an another list: val deduplicated= List((A,B), (C,B)) Thanks in advance! p.s: this is not a home work ;) UPDATE: Thanks to all! The "set"-solution seems to be the preferable one. You could try it with a set, but you need to declare your own tuple class to make it work. case class MyTuple[A](t: (A, A)) {

How can I delete multiple headers from a file? I tried to use the below code after finding it from How can I delete duplicate lines in a file in Unix? . awk '!x[$0]++' file.txt It is deleting all the duplicate records in the file. But in my case, I just need the header duplicates to be removed, not the duplicate records in the file. For example, I have a file with the below data: column1, column2, column3, column4, column5 value11, value12, value13, value14, value14 value21, value22, value23, value24, value25 value31, value32, value33, value34, value35 value41, value42, value43, value44,

I have two table to contain state (state_table) and city (city_table) of countries The city table is having state_id to relate it with state_table Both the tables are already having data in it. Now the problem City table contains multiple entries of a city within one state. And another cities may or may not have the same city name as well e.g.: cityone will have 5 occurrence in the city table with stateone and 2 occurrence with statetwo So how will I write a query to keep one city for each state and delete the rest? Schema follows CREATE TABLE IF NOT EXISTS `city_table` ( `id` int(11) NOT NULL

Let me first say that being able to take 17 million records from a flat file, pushing to a DB on a remote box and having it take 7 minutes is amazing. SSIS truly is fantastic. But now that I have that data up there, how do I remove duplicates? Better yet, I want to take the flat file, remove the duplicates from the flat file and put them back into another flat file. I am thinking about a: Data Flow Task File source (with an associated file connection) A for loop container A script container that contains some logic to tell if another row exists Thak you, and everyone on this site is incredibly