Sum of indices of Characters removed to obtain an Empty String based

Given a string str, consisting of lowercase English alphabets, the task is to calculate the sum of indices(1-based indexing) of the characters removed to obtain an empty string by the following operations:

  • Remove the smallest alphabet in the string.
  • For multiple occurrences of the smallest alphabet, remove the one present at the smallest index.
  • After removal of each character, the indices of all characters on its right reduces by 1.

#arrays #hash #mathematical #recursion #searching #strings #frequency-counting #java-hashmap #segment-tree

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Sum of indices of Characters removed to obtain an Empty String based

Sum of indices of Characters removed to obtain an Empty String based

Given a string str, consisting of lowercase English alphabets, the task is to calculate the sum of indices(1-based indexing) of the characters removed to obtain an empty string by the following operations:

  • Remove the smallest alphabet in the string.
  • For multiple occurrences of the smallest alphabet, remove the one present at the smallest index.
  • After removal of each character, the indices of all characters on its right reduces by 1.

#arrays #hash #mathematical #recursion #searching #strings #frequency-counting #java-hashmap #segment-tree

What is difference between String and string in C#

Are you confused about System.String and string in C#? What is the difference between String and string in C#? And how to choose between string and System.String? In this article, I am going to show you all the differences between string and System.String in C## with code examples. .

What is the difference between System.String and string in C#?

Basically, there is no difference between string and String in C#. “string” is just an alias of System.String and both are compiled in the same manner. String stands for System.String and it is a .NET Framework type. “string” is an alias in the C## language for System.String. Both of them are compiled to System.String in IL (Intermediate Language), so there is no difference.

#c# #string #string and string

Generate a string from an array of alphanumeric strings based on given conditions

Given an array of strings arr[] where each string is of the form “name:number” and a character T as input, the task is to generate a new string based on the following conditions:

  • In each string find the maximum digit in “number” which is less than or equal to the length of the string “name”.
  • If any such digit d is obtained, then append character at index d of the string name to the output string. Otherwise, append character T to the output string.

Examples:

Input:_ arr[] = {“Robert:36787”, “Tina:68721”, “Jo:56389”}, T = ‘X’_

Output:_ tiX_

Explanation:

For the first string “Robert:36787”: Length of “Robert” is 6. Since 6 is present in the string “36787”, 6th character of “Robert”, i.e. t is appended to the answer.

For the second string “Tina:68721”: Length of “Tina” is 4. The highest number less than equal to 4, which is present in “68721” is 2. Therefore, 2nd character of “Tina”, i.e. i is appended to the answer.

For the third string “Jo:56389”: Length of “Jo” is 2. Since no number less than equal to 2 is present in “56389”, T( = ‘X’) is appended to the answer.

Therefore, the final string after the above operations is “tiX”.

_Input: _arr[] = {“Geeks:89167”, “gfg:68795”}, T = ‘X’

Output:_ GX_

Explanation:

For the first string “Geeks:89167”, length of “Geeks” = 5 and the “89167” number has digit 1 which is less than 5.

So, the resultant string will have the character at the 1st position of the name, which is ‘G’.

For the second string “gfg:68795”, the length of “gfg” = 3, and the “68795” doesn’t have a digit less than or equals to 3.

So, the resultant string will have the character T.

Therefore, the final string after the above operations is “GX”.

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach: To solve the problem follow the steps given below:

  1. Traverse through the array of strings and split each string around “:“. The first part contains the name and second part contains the number.
  2. Store the length of the name in a variable and find the maximum digit less than or equal to the length of number.
  3. If any such digit found is found, extract the character at that index of name and append to the resultant string. Otherwise, append T to the resultant string.
  4. Print the resultant string after repeating the above operations for all the strings in the array.

Below is the implementation of the above approach:

Java

// Java program for the above approach

**import** java.io.*;

**class** GFG {

// Function to generate required string

**public** **static** String

generatePassword(String s[], **char** T)

{

// To store the result

StringBuilder result

= **new** StringBuilder();

**for** (String currentString : s) {

// Split name and number

String person[]

= currentString.split(``":"``);

String name = person[``0``];

String number = person[``1``];

**int** n = name.length();

// Stores the maximum number

// less than or equal to the

// length of name

**int** max = 0``;

**for** (``**int** i = 0``;

i < number.length(); i++) {

// Check for number by parsing

// it to integer if it is greater

// than max number so far

**int** temp = Integer.parseInt(

String.valueOf(number.charAt(i)));

**if** (temp > max && temp <= n)

max = temp;

}

// Check if no such number is

// found then we append X

// to the result.

**if** (max == 0``)

result.append(T);

// Otherwise

**else**

// Append max index

// of the name

result.append(

String.valueOf(

name.charAt(max - 1``)));

}

// Return the final string

**return** result.toString();

}

// Driver Code

**public** **static** **void**

main(String[] args)

{

String arr[] = { "Geeks:89167"``,

"gfg:68795" };

**char** T = 'X'``;

// Function Call

System.out.println(

generatePassword(arr, T));

}

}

Output:

GX

Time Complexity:_ O(N)_

Auxiliary Space:_ O(1)_

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#arrays #searching #strings #strings

HI Python

HI Python

1621610100

Python program to remove last N characters from a string

Given a string S and an integer N, the task is to remove N characters from the end of the string S.

Input:_ S = “GeeksForGeeks”, N = 5_

_Output: _GeeksFor

_Explanation: _Removing the last 5 characters from “GeeksForGeeks” modifies the string to “GeeksFor”.

_Input: _S = “Welcome”, N = 3

_Output: _Welc

**Approach 1: **Follow the steps below to solve the problem:

#python programs #strings #python-string-functions

What is Base Protocol (BASE) | What is BASE token

Base Protocol (BASE) is a token whose price is pegged to the total market cap of all cryptocurrencies at a ratio of 1:1 trillion. BASE allows traders to speculate on the entire crypto industry with one token. The Base Protocol is built on the Ethereum blockchain, integrates a (Chainlink) oracle, and is launching on ((Uniswap)

As cryptocurrency enthusiasts, we’re sometimes divided on which digital assets to buy — bullish on certain projects and bearish on others.

But we all agree on one thing, which is that the overall cryptocurrency industry will achieve long-term growth and future adoption.

The Base Protocol makes it possible to invest with this consensus. BASE allows traders to speculate on the entire industry with one token.

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The Base Protocol is the world’s first and only tokenized cryptocurrency market tracker. By holding BASE tokens, users can get exposure to the performance of the entire cryptocurrency market. Unlike the index trackers currently operating in the traditional markets, there is no entry or exit fee or brokerage charges.

Index funds have consistently outperformed actively managed mutual funds. Until the launch of BASE, there was no real cryptocurrency market tracker that tracked the performance of the entire digital asset market. BASE will be useful for institutional investors and traders to diversify and hedge their crypto portfolios. BASE will also help new and existing retail investors to take out the guesswork and get exposed to the growth of all current and future digital assets entering the market.

The BASE token’s underlying protocol creates several additional use cases in DeFi, trading, venture capital, hedge funds and many other business sectors.

The Base Protocol mission is simple — to make it easy for everyone to benefit from the performance of the entire cryptocurrency market in a secure, decentralized and future-proof way.

Why BASE?

It’s no doubt that a crypto industry ETF would be a valuable product for investors. But it is very challenging to create such a product through traditional means, as it would be almost impossible to manage portfolio ownership of 5,000+ assets. How would the portfolio manager weigh ownership of each asset as market cap dominance changes? How would they account for newly entering/exiting assets? Who would take on all the associated transaction and custodial fees? There are also various legal limitations that restrict the formation of such an instrument in many countries — and even if it could be formed, it would be a highly centralized product.

By simply pegging price to the total market capitalization of all cryptocurrencies, the Base Protocol cuts through all of these problems. BASE gives holders the same function as a traditional industry ETF without all of the centralized challenges that make such an ETF impossible.

BASE will offer new value for investors in the cryptocurrency ecosystem through an elegantly simple protocol — so valuable and so simple that you might be asking yourself:

How has this not been done before?

The answer is that it wasn’t possible until recently. This project couldn’t be achieved without a robust decentralized blockchain, proven oracle integrations, and new developments in the DeFi space. We founded the Base Protocol to build on these innovations and create BASE; one tokenized asset that represents speculation on all cryptocurrencies.

Vision

We’ve seen that there are many individuals who want to invest in cryptocurrencies, but don’t necessarily understand how they work. While the overview for each different crypto asset can be difficult to understand for a new user, the pitch for BASE is simple: it’s the way to invest in all of those crypto assets simultaneously. In this way, the Base Protocol can become an instrumental force in driving new adoption in the blockchain space.

We’ve also noticed that institutional investors have been introducing cryptocurrency investments to their portfolios. These institutions typically invest at a high level with great diversification covering multiple industries. Their cryptocurrency holdings are usually composed of just Bitcoin, or some handful mix of “blue chip” digital assets. By holding BASE, these institutions will gain exposure to the entire cryptocurrency industry — an objectively more diversified alternative.

In the same way that Bitcoin is the household name of cryptocurrencies, the Base Protocol aims to become the household name for general cryptocurrency investing. BASE’s vision is to become the primary channel of investment for new/existing cryptocurrency traders and institutional investors.

Would you like to earn token right now! ☞ CLICK HERE

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#blockchain #bitcoin #crypto #base protocol #base