Closing Value Problem Description Stock Exchange of country XYZ is still working on pen paper mode, wherein the traders have to bid the price for buying and selling the stocks and the stocks prices are checked manually, then the buying and selling data is validated and if the condition matches then it is recorded in the record book. For example, if A wants to buy stocks at 100 and B is willing to sell the required stocks at 95, then A can buy his desired share at 95 and the price of the share will become 95. The price of shares of a company is determined by the latest transaction recorded in the record book. As the number of transactions are increasing it is getting hard to match and record the transactions manually. The stock exchange wants to go online and has hired Karim to make the process online. The stock exchange personnel will give him the bid and he has to design a program to match the values and if the transaction is done, then record it in the record book which will also be online. Help Karim in recording the completed transactions and enter the closing price in record book. He has to give the closing values of all the companies whose transactions have been recorded in ascending order. In case, if more than one matching bids are received then the trader with lower TraderId will get the preference. In case only a partial match is received then it will be a split transaction. For example, consider following transaction below: TraderId TradeType StockName Price Quantity 1 Buy ABC 50 90 2 Buy ABC 50 90 3 Sell ABC 50 100 Trader 3 will sell his 90 stocks to Trader 1 at price of 50. Since Trader 3 has 10 stocks left, the remaining stocks can be purchased by Trader 2. Hence, Trader 1 and Trader 3 have squared off their positions whereas as Trader 2 has open bid for 80 stocks of ABC at a price of 5. Here, Trader 3 had a split transaction which is closed whereas Trader 2 also had split transaction which is still open. Constraints 0 Where, TraderId is single integer containing the id of trader, smaller trader id indicates the timestamp of the trade Tradetype can be either Buy/Sell StockName is the name of the company that trader wants to bid Price indicates the price at which the trader has bid Quantity indicates the number of stocks trader wants to purchase/buy Output Lexicographically ascending order of Stock Name(S) along with respective values(C) in the format (S:C). If no company has traded the stock, then print "Stocks not traded" Time Limit 1 Examples Example 1 Input 3 1 Sell ABC 1876 173 2 Sell DEF 7160 221 3 Buy ABC 6986 864 Output ABC:1876 Explanation Here transaction of ABC is recorded but the DEF is not recorded as no one has bid to buy the stocks of DEF. Trader with id 3 will buy 173 shares from trader with id 1 of Stock ABC at unit price of 1876. Since this becomes the closing price of ABC, output is ABC:1876 Example 2 Input 3 1 Sell ABC 1876 173 2 Sell DEF 7160 221 3 Buy ABC 1200 864 Output Stocks not traded Explanation Since, no transaction has taken place as the buy bid is less than sell for company ABC and there is no trade to buy DEF, there is no record in the record book. Hence "Stocks not traded" will be the output.
Answers
Answer:
the stock market is an electronic market place. Buyers and sellers meet and trade their point of view.
For example, consider the current situation of Infosys. At the time of writing this, Infosys is facing a succession issue, and most of its senior level management personnel are quitting the company for internal reasons. It seems like the leadership vacuum is weighing down the company’s reputation heavily. As a result, the stock price dropped to Rs.3,000 all the way from Rs.3,500. Whenever there are new reports regarding Infosys management change, the stock prices react to it.
Assume there are two traders – T1 and T2.
T1’s point of view on Infosys – The stock price is likely to go down further because the company will find it challenging to find a new CEO.
If T1 trades as per his point of view, he should be a seller of the Infosys stock.
T2, however views the same situation in a different light and therefore has a different point of view – According to him, the stock price of Infosys has over reacted to the succession issue and soon the company will find a great leader, after whose appointment the stock price will move upwards.
If T2 trades as per his point of view, he should be a buyer of the Infosys stock.
So at, Rs.3, 000 T1 will be a seller, and T2 will be a buyer in Infosys.
Now both T1 and T2 will place orders to sell and buy the stocks respectively through their respective stock brokers. The stock broker, obviously routes it to the stock exchange.
The stock exchange has to ensure that these two orders are matched, and the trade gets executed. This is the primary job of the stock market – to create a market place for the buyer and seller.
The stock market is a place where market participants can access any publicly listed company and trade from their point of view, as long as there are other participants who have an opposing point of view. After all, different opinions are what make a market.