design a program that asks the user for a series of names(in no particular order). after the final person's name has been entered, the program should display the name that is alphabetically and the name that is last alphabetically
for example if the user enters the names Kristin, Joel, Adam,zeb, Beth and Chris, the program would display Adam and zeb.
im stuck at the While statment, how can i make the program know what name has alphabetic in order. some people are telling me to use Arrays which i cant, we havent learned it yet. Were using IF and While Statments only.
Okay so in pseudocode it would look like this:
// 1) Get names from user and store them in array
// 2) Order array alphabetically
// 3) Get first element in array and display it
// 4) Get last element in array and display it
Is this what you are looking for?
Related
In Google Sheets I have a column containing a list of available Serial Numbers (say, column A).
Somewhere else (say, column B) a user must choose the serial number used among those listed in column A; I use Data Validation with a drop-down list in order to prevent the user to use a non-existent serial number.
My goal is to allow the user only choose the remaining available serial numbers, by removing from the drop-down list all the serial numbers already used.
By using the FILTER function, combined with MATCH and ISNA, I am able to create a column of available serial numbers (say, column C). The function used is:
=FILTER(A2:A;ISNA(MATCH(A2:A;B2:B;0))).
Then I moved the Data Validation list of column B (where the user must select the serial number used) from column A (all serial numbers) to column C (filtered serial numbers). I also added the "Reject input" in the Data Validation form, so I can allow the user only to enter a value listed in column C.
It works, but all the previously entered serial numbers on column B have a small red triangle showing that data is not valid. Of course, this happens because all entered values are removed from the data validation list.
I could simply ignore the red triangles, but I don't like this solution that much, because it always looks like there's an error on the sheet, and when we will have many data inside it would be difficult to distinguish this problem from any others.
Is there a different way to solve?
Thanks
with formula only you can use:
=TRANSPOSE(FILTER(A2:A, NOT(COUNTIF(C3:C4, A2:A)), A2:A<>""))
=TRANSPOSE(FILTER(A2:A, NOT(COUNTIF({C2; C4}, A2:A)), A2:A<>""))
=TRANSPOSE(FILTER(A2:A, NOT(COUNTIF(C2:C3, A2:A)), A2:A<>""))
then hide columns and use validation:
where this is the result:
demo sheet
update:
1st fx:
=TRANSPOSE(FILTER(A2:A, NOT(COUNTIF(C3:C4, A2:A)), A2:A<>""))
2nd and every next fx:
=TRANSPOSE(FILTER(A$2:A, NOT(COUNTIF({
INDIRECT("C2:C"&ROW()-1); INDIRECT("C"&ROW()+1&":C")}, A$2:A)), A$2:A<>""))
I have the following idea I can't implement:
There is a row with given table plate numbers (column B) and there is a second row with names which are copies by "vlookup" formula from another spreadsheet and in case there are no numbers found, the text should be filled in manually. I have added the formula which leaves cells blank:
=if(isna(index('spreadsheet1'!A4:A1002;match(B16;'spreadsheet1'!B4:B1002;0)));"";index('spreadsheet1'!A4:A1002;match(B16;'spreadsheet1'!B4:B1002;0)))
But sometimes the person assigned to a car plate changes and thus, after taking this value, I have to make as easy as I can to paste values only (the problem is the person who will add data may make mistakes) - I have created a button and want to assign a script which will check if the value in the column B has a name (not empty =""), then it should copy it and paste value only at the same place but all other cells which will be empty should stay with formulas inside them for further addition of a person to a new plate number or to be added manually.
Every new column will be filled in one by one and would like this script to work for constantly. Do you have any ideas or hints how I can implement it?
I'm creating a dashboard in Excel 2010 that uses the VLOOKUP function to call another sheet's values.
The equation I'm using is this:
=VLOOKUP(L$1,Sheet_B!$A:$H,7,2)
L$1 asks for a unique identifier on Sheet_A, and then finds that ID on Sheet_B and then finds the corresponding data and pulls it.
The problem is this:
If I do nothing to Sheet_B, I'll get a value - let's say 5. This value is incorrect.
If I sort Sheet_B from A-Z alphabetically (which doesn't change the data) I'll get a totally different value - let's say 12 - which is the correct value.
The problem is that the data that the VLOOKUP function examines hasn't changed, only how it was sorted in Sheet_B.
Is there any reason why this might happen? And more importantly, how can I fix it so I don't have to keep sorting Sheet_B every time I pull this dashboard?
If your 4th parameter equals True (2 in your case), VLOOKUP tries to find an approximate match, so you need the values in the first column of table_array to be placed in ascending order.
If you change it to 0 (equivalent to False), VLOOKUP will try to find an exact match, and so will not need to be sorted.
Therefore, you should change your VLOOKUP to:
=VLOOKUP(L$1,Sheet_B!$A:$H,7,0)
You can read more in this Microsoft Office Support article..
I need an urgent help from you guys, the thing i have a column which represent the full name of a user , now i want to split it into first and last name.
The format of the Full name is "World, hello", now the first name here is hello and last name is world.
I am using Derived Column(SSIS) and using Right Function for First Name and substring function for last name, but the result of these seems to be blank, this where even i am blank. :)
It's working for me. In general, you should provide more detail in your questions on places such as this to help others recreate and troubleshoot your issue. You did not specify whether we needed to address NULLs in this field nor do I know how you'd want to interpret it so there is room for improvement on this answer.
I started with a simple OLE DB Source and hard coded a query of "SELECT 'World, Hello' AS Name".
I created 2 Derived Column Tasks. The first one adds a column to Data Flow called FirstCommaPosition. The formula I used is FINDSTRING(Name,",", 1) If NAME is NULLable, then we will need to test for nullability prior to calling the FINDSTRING function. You'll then need to determine how you will want to store the split data in the case of NULLs. I would assume both first and last are should be NULLed but I don't know that.
There are two reasons for doing this in separate steps. The first is performance. As counter-intuitive as it sounds, doing less in a derived column results in better performance because the SSIS engine can better parallelize the operations. The other is more simple - I will need to use this value to make the first and last name split so it will be easier and less maintenance to reference a column than to copy paste a formula.
The second Derived Column is going to actually perform the split.
My FirstNameUnicode column uses this formula (FirstCommaPosition > 0) ? RTRIM(LTRIM(RIGHT(Name,FirstCommaPosition))) : "" That says "If we found a comma in the preceding step, then slice out everything from the comma's position to the end of the string and apply trim operations. If we didn't find a comma, then just return a blank string. The default string type for expressions will be the Unicode (DT_WSTR) so if that is not your need, you will need to cast the resultant into the correct string codepage (DT_STR)
My LastNameUnicode column uses this formula (FirstCommaPosition > 0) ? SUBSTRING(Name,1,FirstCommaPosition -1) : "" Similar logic as above except now I use the SUBSTRING operation instead of RIGHT. Users of the 2012 release of SSIS and beyond, rejoice fo you can use the LEFT function instead of SUBSTRING. Also note that you will need to back off 1 position to remove the comma.
Is there a efficient way to store first name and last name in data structure so that we can lookup using either first or last name? I would consider a binary search tree with first name. It would be efficient to search first name. But wouldnt be efficient when trying to search last name. we can also consider one more BST with last name. Any ideas to implement it efficiently?
What if the question is
String names[] = { "A B","C D"};
A requirement is to be able to extend this directory dynamically at runtime,
without persistent storage. The directory can eventually grow to hundreds or
thousands of names and must be searchable by first or last name.
Now we can't have hash tables to store. Any ideas?
Two hash tables: one from first name to person, and one from last name to person.
Simple is best.
Why not put both first and last names in a trie?
As a bonus, this way you can even get suggestions on partial names by traversing all leaves after current node (maybe on an asynchronous call)
You're idea is pretty good, but here's another option: how about implementing to hash tables?
The first hash table would use first names as a key, and the associated value would either be the last name or a pointer to a Name object. The second hash table would use last names as keys, with the first names or pointers to Name as the values.
Personally, for choosing the values, I would go for a pointer to a Name object, since this method would be more applicable in case you'd like to store even more information (e.g. data of birth, etc.)
Also, see Does Java have a HashMap with reverse lookup?…, which is specific to Java but the discussion on the data structures is relevant to any language.
Note that structures such as Bidirectional Sorted Maps also allow range searches (which dual hash tables don't).
if you need to search only by first name or only by last name then yes, two hashmaps are the best (and notice you're not duplicating the data, you're partitioning it) but if you don't mind then put both first and last names in a single hashmap and don't differentiate between the two.