Implement system to get most traded stocks in C#
0
$begingroup$
Please suggest way to solve a coding question, I came across. Question is as follows:
Implement a class StockMarket that has the two following functions:
class StockMarket
{
public:
void addTrade(string stockName, int share);
- This function keeps track the number of shares transacted for a stock by adding the trade information
void printTop(int numberOfStock);
- This function prints the top numberOfStock stocks that has the highest number of transacted shares
}
And here's a sample calling sequence that uses the above class:
StockMarket stockMarket = new StockMarket();
stockMarket.addTrade("GOOGLE", 50);
stockMarket.addTrade("APPLE", 150);
stockMarket.addTrade("GOOGLE", 100);
stockMarket.addTrade("MSFT", 250);
stockMarket.addTrade("GOOGLE", 200);
stockMarket.printTop(2);
Expected output:
GOOGLE 350
MSFT 250
I followed 2 approaches to solve this problem:
- Create Dictionary with Key - CompanyName and value - number of shares. While giving top results, I sorted dictionary by descending and returned results.
Time Complexity: Add - O(1) | GetTop - O(nlogn) + O(k)
- Create SortedSet with custom comparer to sort stocks with descending order. I am facing challanges to update SortedSet. I am not able to remove old entries with time less than O(n).
Please find below my current code :
public class StockNodeComparer : IComparer<StockNode>
{
public int Compare(StockNode s1, StockNode s2)
{
int result = s2.value.CompareTo(s1.value);
if (result == 0)
{
return 1;
}
else
{
return result;
}
}
}
public class StockNode
{
public int value;
public string name;
public StockNode(string n, int i)
{
name = n;
value = i;
}
}
public class StockContainer
{
public Dictionary<string, StockNode> map;
public SortedSet<StockNode> sortedStockList;
public StockContainer()
{
map = new Dictionary<string, StockNode>();
sortedStockList = new SortedSet<StockNode>(new StockNodeComparer());
}
public void AddValue(string s, int x)
{
if(map.ContainsKey(s))
{
int tempVal = map[s].value;
sortedStockList.Remove(map[s]);
var tempNode = new StockNode(s, tempVal + x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
else
{
var tempNode = new StockNode(s, x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
}
private void AddNodeInDict(string s, ref StockNode tempNode)
{
map[s] = tempNode;
}
public void GetTop(int k)
{
int i = 0;
while(i<k)
{
Console.WriteLine(sortedStockList.ElementAt(sortedStockList.Count - i).name);
}
}
}
c#
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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add a comment |
0
$begingroup$
Please suggest way to solve a coding question, I came across. Question is as follows:
Implement a class StockMarket that has the two following functions:
class StockMarket
{
public:
void addTrade(string stockName, int share);
- This function keeps track the number of shares transacted for a stock by adding the trade information
void printTop(int numberOfStock);
- This function prints the top numberOfStock stocks that has the highest number of transacted shares
}
And here's a sample calling sequence that uses the above class:
StockMarket stockMarket = new StockMarket();
stockMarket.addTrade("GOOGLE", 50);
stockMarket.addTrade("APPLE", 150);
stockMarket.addTrade("GOOGLE", 100);
stockMarket.addTrade("MSFT", 250);
stockMarket.addTrade("GOOGLE", 200);
stockMarket.printTop(2);
Expected output:
GOOGLE 350
MSFT 250
I followed 2 approaches to solve this problem:
- Create Dictionary with Key - CompanyName and value - number of shares. While giving top results, I sorted dictionary by descending and returned results.
Time Complexity: Add - O(1) | GetTop - O(nlogn) + O(k)
- Create SortedSet with custom comparer to sort stocks with descending order. I am facing challanges to update SortedSet. I am not able to remove old entries with time less than O(n).
Please find below my current code :
public class StockNodeComparer : IComparer<StockNode>
{
public int Compare(StockNode s1, StockNode s2)
{
int result = s2.value.CompareTo(s1.value);
if (result == 0)
{
return 1;
}
else
{
return result;
}
}
}
public class StockNode
{
public int value;
public string name;
public StockNode(string n, int i)
{
name = n;
value = i;
}
}
public class StockContainer
{
public Dictionary<string, StockNode> map;
public SortedSet<StockNode> sortedStockList;
public StockContainer()
{
map = new Dictionary<string, StockNode>();
sortedStockList = new SortedSet<StockNode>(new StockNodeComparer());
}
public void AddValue(string s, int x)
{
if(map.ContainsKey(s))
{
int tempVal = map[s].value;
sortedStockList.Remove(map[s]);
var tempNode = new StockNode(s, tempVal + x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
else
{
var tempNode = new StockNode(s, x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
}
private void AddNodeInDict(string s, ref StockNode tempNode)
{
map[s] = tempNode;
}
public void GetTop(int k)
{
int i = 0;
while(i<k)
{
Console.WriteLine(sortedStockList.ElementAt(sortedStockList.Count - i).name);
}
}
}
c#
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
0
0
0
$begingroup$
Please suggest way to solve a coding question, I came across. Question is as follows:
Implement a class StockMarket that has the two following functions:
class StockMarket
{
public:
void addTrade(string stockName, int share);
- This function keeps track the number of shares transacted for a stock by adding the trade information
void printTop(int numberOfStock);
- This function prints the top numberOfStock stocks that has the highest number of transacted shares
}
And here's a sample calling sequence that uses the above class:
StockMarket stockMarket = new StockMarket();
stockMarket.addTrade("GOOGLE", 50);
stockMarket.addTrade("APPLE", 150);
stockMarket.addTrade("GOOGLE", 100);
stockMarket.addTrade("MSFT", 250);
stockMarket.addTrade("GOOGLE", 200);
stockMarket.printTop(2);
Expected output:
GOOGLE 350
MSFT 250
I followed 2 approaches to solve this problem:
- Create Dictionary with Key - CompanyName and value - number of shares. While giving top results, I sorted dictionary by descending and returned results.
Time Complexity: Add - O(1) | GetTop - O(nlogn) + O(k)
- Create SortedSet with custom comparer to sort stocks with descending order. I am facing challanges to update SortedSet. I am not able to remove old entries with time less than O(n).
Please find below my current code :
public class StockNodeComparer : IComparer<StockNode>
{
public int Compare(StockNode s1, StockNode s2)
{
int result = s2.value.CompareTo(s1.value);
if (result == 0)
{
return 1;
}
else
{
return result;
}
}
}
public class StockNode
{
public int value;
public string name;
public StockNode(string n, int i)
{
name = n;
value = i;
}
}
public class StockContainer
{
public Dictionary<string, StockNode> map;
public SortedSet<StockNode> sortedStockList;
public StockContainer()
{
map = new Dictionary<string, StockNode>();
sortedStockList = new SortedSet<StockNode>(new StockNodeComparer());
}
public void AddValue(string s, int x)
{
if(map.ContainsKey(s))
{
int tempVal = map[s].value;
sortedStockList.Remove(map[s]);
var tempNode = new StockNode(s, tempVal + x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
else
{
var tempNode = new StockNode(s, x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
}
private void AddNodeInDict(string s, ref StockNode tempNode)
{
map[s] = tempNode;
}
public void GetTop(int k)
{
int i = 0;
while(i<k)
{
Console.WriteLine(sortedStockList.ElementAt(sortedStockList.Count - i).name);
}
}
}
c#
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
Please suggest way to solve a coding question, I came across. Question is as follows:
Implement a class StockMarket that has the two following functions:
class StockMarket
{
public:
void addTrade(string stockName, int share);
- This function keeps track the number of shares transacted for a stock by adding the trade information
void printTop(int numberOfStock);
- This function prints the top numberOfStock stocks that has the highest number of transacted shares
}
And here's a sample calling sequence that uses the above class:
StockMarket stockMarket = new StockMarket();
stockMarket.addTrade("GOOGLE", 50);
stockMarket.addTrade("APPLE", 150);
stockMarket.addTrade("GOOGLE", 100);
stockMarket.addTrade("MSFT", 250);
stockMarket.addTrade("GOOGLE", 200);
stockMarket.printTop(2);
Expected output:
GOOGLE 350
MSFT 250
I followed 2 approaches to solve this problem:
- Create Dictionary with Key - CompanyName and value - number of shares. While giving top results, I sorted dictionary by descending and returned results.
Time Complexity: Add - O(1) | GetTop - O(nlogn) + O(k)
- Create SortedSet with custom comparer to sort stocks with descending order. I am facing challanges to update SortedSet. I am not able to remove old entries with time less than O(n).
Please find below my current code :
public class StockNodeComparer : IComparer<StockNode>
{
public int Compare(StockNode s1, StockNode s2)
{
int result = s2.value.CompareTo(s1.value);
if (result == 0)
{
return 1;
}
else
{
return result;
}
}
}
public class StockNode
{
public int value;
public string name;
public StockNode(string n, int i)
{
name = n;
value = i;
}
}
public class StockContainer
{
public Dictionary<string, StockNode> map;
public SortedSet<StockNode> sortedStockList;
public StockContainer()
{
map = new Dictionary<string, StockNode>();
sortedStockList = new SortedSet<StockNode>(new StockNodeComparer());
}
public void AddValue(string s, int x)
{
if(map.ContainsKey(s))
{
int tempVal = map[s].value;
sortedStockList.Remove(map[s]);
var tempNode = new StockNode(s, tempVal + x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
else
{
var tempNode = new StockNode(s, x);
AddNodeInDict(s, ref tempNode);
sortedStockList.Add(tempNode);
}
}
private void AddNodeInDict(string s, ref StockNode tempNode)
{
map[s] = tempNode;
}
public void GetTop(int k)
{
int i = 0;
while(i<k)
{
Console.WriteLine(sortedStockList.ElementAt(sortedStockList.Count - i).name);
}
}
}
c#
c#
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 mins ago
AkshayPAkshayP
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 mins ago
AkshayPAkshayP
1
asked 9 mins ago
AkshayPAkshayP
1
1
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
AkshayP is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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