Behind the Scenes of UPI: How ₹100 Travels Faster Than Your Crush’s Reply 😜

India’s UPI is like the pizza delivery guy – fast, accurate, and never forgets the address! 🍕📦

It’s simple, public, and trusted by everyone – from the street vendor to Netflix subscriptions.

🎬 How UPI Works (Funny Example)

Let’s imagine Srinivasarao wants to send ₹100 to Amit –

💡 Not as a gift, but because Amit bought him samosa + chai last night. ☕🥟

1️⃣ Srinivasarao (Sender) opens PhonePe

👉 Like Srinivasarao opening Swiggy to pay for his midnight cravings.

2️⃣ Srinivasarao enters Amit’s UPI ID

👉 Instead of typing “Amit Samosa” in contacts, he types amit@icici. 😂

3️⃣ PhonePe encrypts the request

👉 Like Rahul whispering to SBI: “Shhh… send money to Amit, don’t tell anyone.” 🤫💸

4️⃣ SBI forwards it to NPCI

👉 SBI acts like the courier guy saying: “Check Srinivasarao’s account balance, boss.” 📦

5️⃣ NPCI forwards to ICICI

👉 NPCI tells ICICI: “Confirm Amit’s details, is this the right Amit?” 📬

6️⃣ ICICI validates Amit

👉 ICICI says: “Yes, he’s our guy.” ✅

7️⃣ HDFC debits ₹100

👉 Srinivasarao’s bank (HDFC) grabs the money like mom taking ₹100 for “household shopping.” 😅💰

8️⃣ NPCI instructs ICICI

👉 NPCI says: “ICICI, put ₹100 in Amit’s account.” 🏦

9️⃣ ICICI credits Amit

👉 Amit’s phone goes Ting! 📲 “Balance +₹100.” He smiles like he just won a lottery. 😎

🔟 RBI settles everything

👉 RBI, the big boss, confirms: “Money is in the right place. Peace out.” 🕴️

⚡All this happens in seconds – faster than your OTP arrives!

💡 Why UPI Works So Well

✅ Banks: Like strict parents – holding the money safely. 🏦

✅ Payment Apps: Like cool siblings – making life easy & fun. 📱

✅ NPCI: The trusted postman – delivering the money to the right house. 📮

🌍 That’s why UPI is the backbone of India’s digital economy 💪

And also the reason your friends can’t say “Bro, I’ll pay you tomorrow.” anymore 😜💸

👉 Should I also make this into a short 5–6 punchline format so 

you can directly post on LinkedIn/Instagram for maximum virality? 🔥

Find out duplicate number between 1 to N numbers.

Description:

You have got a range of numbers between 1 to N, where one of the number is repeated. You need to write a program to find out the duplicate number.

Code:

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 package com.govindsblog.algos;   import java.util.ArrayList; import java.util.List;   public class DuplicateNumber {       public int findDuplicateNumber(List<Integer> numbers){                   int highestNumber = numbers.size() - 1;         int total = getSum(numbers);         int duplicate = total - (highestNumber*(highestNumber+1)/2);         return duplicate;     }           public int getSum(List<Integer> numbers){                   int sum = 0;         for(int num:numbers){             sum += num;         }         return sum;     }           public static void main(String a[]){         List<Integer> numbers = new ArrayList<Integer>();         for(int i=1;i<30;i++){             numbers.add(i);         }         //add duplicate number into the list         numbers.add(22);         DuplicateNumber dn = new DuplicateNumber();         System.out.println("Duplicate Number: "+dn.findDuplicateNumber(numbers));     } }

Output:

Duplicate Number: 22