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Questions - mergesort

Global array won't update, keeps giving garbage values when passed by reference

It's supposed to call a function through a thread for merge sort- but for some reason, it doesn't update the global array when I try to output it later through the main() function. So i tried passing ...
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MR DZ

c

multithreading

global-variables

mergesort

garbage

Votes: 0

Answers: 2

Latest Answer

TL;DR Remove all the & in front of array and it should work. An array is always passed by reference: think of the array as an int pointer. With an array declared like this int table[], using the v...
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Jocelyn

Difference between using else if and just if conditions

I was creating a merge sort algorithm and came across an issue. After like 30 minutes I replaced my if statements with else if, and this fixed my problem. Can anyone explain to me why this is? Also, w...
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iamxaji

java

if-statement

merge

mergesort

Votes: 0

Answers: 1

Latest Answer

If you have several separate ifs, more than one of their conditional blocks can be executed, even if their conditions themselves seem to prevent that. In contrast to that, using a chain of else if gua...
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Yunnosch

Sort merge two piles in C

I'm learning C and encountered with this issue: So I have a code that sorts 2 arrays (a and b) into a new array c. That should be easy enough, but the code isn't working and I'd like to ask for help, ...
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Nicolás Rivera

arrays

c

printf

mergesort

Votes: 0

Answers: 0

Remove duplicate in merge sort of linked lists

I have made a method that merge sorts two linked lists in descending order. I am now having difficulty in removing duplicates. I have seen some remove duplicate methods but I want to implement in with...
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Dae

java

generics

linked-list

nodes

mergesort

Votes: 0

Answers: 1

Latest Answer

Your logic will only work if the 2 input lists are already sorted. Assuming they are, to remove duplicates in your code you can compare merged and (n1 or n2) before updating merged.next. Also in the e...
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Harshal Pawar

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