#Q18 #leet_codeQ18 Easy
1480 . Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]).
Return the running sum of nums.
Example 1:
Input: nums = [1,2,3,4]
Output: [1,3,6,10]
Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4].
Example 2:
Input: nums = [1,1,1,1,1]
Output: [1,2,3,4,5]
Explanation: Running sum is obtained as follows: [1, 1+1, 1+1+1, 1+1+1+1, 1+1+1+1+1].
Example 3:
Input: nums = [3,1,2,10,1]
Output: [3,4,6,16,17]
Constraints:
1 <= nums.length <= 1000
-10^6 <= nums[i] <= 10^6
1480 . Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]).
Return the running sum of nums.
Example 1:
Input: nums = [1,2,3,4]
Output: [1,3,6,10]
Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4].
Example 2:
Input: nums = [1,1,1,1,1]
Output: [1,2,3,4,5]
Explanation: Running sum is obtained as follows: [1, 1+1, 1+1+1, 1+1+1+1, 1+1+1+1+1].
Example 3:
Input: nums = [3,1,2,10,1]
Output: [3,4,6,16,17]
Constraints:
1 <= nums.length <= 1000
-10^6 <= nums[i] <= 10^6
👍3
Leetcode with dani
Mean of range in array #Q17 Geeks for Geeks Given an array of n integers and q queries. Write a program to find floor value of mean in range l to r for each query in a new line. Queries are given by an array queries[] of size 2*q. Here queries[2*i] denote…
def fillPrefixSum(arr, n, prefixSum):
prefixSum[0] = arr[0]
# Adding present element
# with previous element
for i in range(1, n):
prefixSum[i] = prefixSum[i - 1] + arr[i]
# Driver code
if __name__ == '__main__':
arr = [10, 4, 16, 20]
n = len(arr)
# Function call
prefixSum = [0 for i in range(n + 1)]
fillPrefixSum(arr, n, prefixSum)
for i in range(n):
print(prefixSum[i], " ", end="")
# This code is contributed
# by Anant Agarwal.
Forwarded from SkillUp (Da_Mini)
🌟 Learn to Code for Free with freeCodeCamp!
📚 freeCodeCamp offers a comprehensive curriculum to learn coding and earn certifications in areas such as web development, data visualization, and more. Ideal for beginners and experienced learners alike.
🎓 Key Features:
- Completely free
- Interactive lessons
- Certifications upon completion
🌐 Start Learning Today: [freeCodeCamp](https://www.freecodecamp.org)
#FreeCoding #WebDevelopment #DataVisualization #LearnToCode #freeCodeCamp #SkillDevelopment
📚 freeCodeCamp offers a comprehensive curriculum to learn coding and earn certifications in areas such as web development, data visualization, and more. Ideal for beginners and experienced learners alike.
🎓 Key Features:
- Completely free
- Interactive lessons
- Certifications upon completion
🌐 Start Learning Today: [freeCodeCamp](https://www.freecodecamp.org)
#FreeCoding #WebDevelopment #DataVisualization #LearnToCode #freeCodeCamp #SkillDevelopment
www.freecodecamp.org
Learn to Code — For Free
Which difficulty level of LeetCode problems do you prefer?"
Anonymous Poll
45%
a) Easy
50%
b) Medium
14%
c) Hard
What’s your preferred approach when tackling a new coding problem?"
Anonymous Poll
33%
a) Start with brute force, then optimize
28%
b) Think about the optimal solution first
17%
c) Look up hints or similar problems
28%
d) Break it down into smaller problem
Which additional learning resources would you like to see?"
Anonymous Poll
61%
a) Video explanations
22%
b) Written tutorials
9%
c) Live coding sessions
13%
d) Peer discussion groups
How many LeetCode questions have you solved so far?"
Anonymous Poll
74%
a) Less than 50
11%
b) 50 - 100
8%
c) 100 - 200
8%
d) More than 200
Which programming language do you primarily use for solving LeetCode problems?"
Anonymous Poll
77%
a) Python
4%
b) Java
11%
c) C++
5%
d) JavaScript
3%
e) Other
please vote the above poll. it is important for us to enhance our channel
Code-Forces Question For u
🚀 Problem B: Red and Blue Challenge
🎯 Objective: Help Monocarp restore a sequence from two colored subsequences and maximize the prefix sum.
🔢 Details:
- You have two sequences: Red and Blue.
- Combine them to restore the original sequence that maximizes the prefix sum ( f(a) ).
⏳ Constraints:
- Time Limit: 2 seconds per test
- Memory Limit: 512 MB
📋 Input:
- Number of test cases:
- For each test case:
- Length of Red sequence (
- Length of Blue sequence (
💡 Example:
Input:
Output:
🚀 Problem B: Red and Blue Challenge
🎯 Objective: Help Monocarp restore a sequence from two colored subsequences and maximize the prefix sum.
🔢 Details:
- You have two sequences: Red and Blue.
- Combine them to restore the original sequence that maximizes the prefix sum ( f(a) ).
⏳ Constraints:
- Time Limit: 2 seconds per test
- Memory Limit: 512 MB
📋 Input:
- Number of test cases:
t- For each test case:
- Length of Red sequence (
n) and the sequence itself- Length of Blue sequence (
m) and the sequence itself💡 Example:
Input:
4
4
6 -5 7 -3
3
2 3 -4
2
1 1
4
10 -3 2 2
5
-1 -2 -3 -4 -5
5
-1 -2 -3 -4 -5
1
0
1
0
Output:
13
13
0
0
🌟 Welcome to LeetCode with Dani! 🌟
🔍 Today’s Topic: Data Structures!
Hey LeetCoders! 🚀 Let’s dive into the world of data structures—the backbone of efficient coding!
💡 What is a Data Structure?
Think of data structures as the organizational tools for your code. They help us store, manage, and manipulate data effectively. Choosing the right data structure can significantly enhance your algorithm's performance!
—
🔗 Why Should You Care?
Understanding data structures is crucial for solving LeetCode problems. They’re not just theoretical concepts; they’re practical tools that can help you ace your coding interviews! Here are some key applications:
- 📊 Efficient Searching & Sorting
- 🛠 Building Compilers
- 🤖 AI Algorithms
- 🗄 Database Management
- 🎨 Graphics Rendering
- 🔄 Simulations & Modeling
—
✨ Challenge of the Day:
Here are 2 common coding interview questions related to data structures:
1. Reverse a Linked List: Given the head of a singly linked list, reverse the list and return the reversed list.
- *Tip*: Think about using pointers!
2. Valid Parentheses: Given a string containing just the characters '(', ')', '', '', '[' and ']', determine if the input string is valid. An input string is valid if:
- Open brackets are closed by the same type of brackets.
- Open brackets are closed in the correct order.
Try solving these problems and share your solutions and thoughts in the chat! Let’s learn together! 💬
Happy coding! 💻🔥
🔍 Today’s Topic: Data Structures!
Hey LeetCoders! 🚀 Let’s dive into the world of data structures—the backbone of efficient coding!
💡 What is a Data Structure?
Think of data structures as the organizational tools for your code. They help us store, manage, and manipulate data effectively. Choosing the right data structure can significantly enhance your algorithm's performance!
—
🔗 Why Should You Care?
Understanding data structures is crucial for solving LeetCode problems. They’re not just theoretical concepts; they’re practical tools that can help you ace your coding interviews! Here are some key applications:
- 📊 Efficient Searching & Sorting
- 🛠 Building Compilers
- 🤖 AI Algorithms
- 🗄 Database Management
- 🎨 Graphics Rendering
- 🔄 Simulations & Modeling
—
✨ Challenge of the Day:
Here are 2 common coding interview questions related to data structures:
1. Reverse a Linked List: Given the head of a singly linked list, reverse the list and return the reversed list.
- *Tip*: Think about using pointers!
2. Valid Parentheses: Given a string containing just the characters '(', ')', '', '', '[' and ']', determine if the input string is valid. An input string is valid if:
- Open brackets are closed by the same type of brackets.
- Open brackets are closed in the correct order.
Try solving these problems and share your solutions and thoughts in the chat! Let’s learn together! 💬
Happy coding! 💻🔥
Forwarded from A2SV - Community
Opportunity to Join A2SV Generation 5: August Conversion Applications Now Open
A2SV is offering a limited number of seats to students who possess potential and dedication. This is your chance to join us and be part of our Generation 5! While our main intake period is in November, marking the start of the academic year, we are pleased to announce that we have a few additional seats available for talented students like yourself.
📅 Application registration closes on Sunday, August 18, 2024, at 11:59 PM EAT.
🎓 Eligibility:
Open to all current students from Addis Ababa University (AAU), Addis Ababa Science and Technology University (AASTU), and Adama Science and Technology University (ASTU), regardless of batch or department.
✨ Requirements:
❄️ Familiarity with Python
❄️ Experience with interview preparation platforms like LeetCode and Codeforces
❄️ Completion of a minimum of 300 problems across LeetCode and Codeforces
❄️ At least 80 active days on LeetCode and Codeforces
❄️ Covered the following topics: Topics Covered
🤖 Selection Process:
❄️ First Round Filtering: Applicants will undergo an initial screening process
❄️ Technical and Behavioral Interviews: Selected candidates from the first round will proceed to technical and behavioral interviews to assess their skills and suitability for the program
📋 Apply now to seize this opportunity and embark on a journey with A2SV!
A2SV is offering a limited number of seats to students who possess potential and dedication. This is your chance to join us and be part of our Generation 5! While our main intake period is in November, marking the start of the academic year, we are pleased to announce that we have a few additional seats available for talented students like yourself.
📅 Application registration closes on Sunday, August 18, 2024, at 11:59 PM EAT.
🎓 Eligibility:
Open to all current students from Addis Ababa University (AAU), Addis Ababa Science and Technology University (AASTU), and Adama Science and Technology University (ASTU), regardless of batch or department.
✨ Requirements:
❄️ Familiarity with Python
❄️ Experience with interview preparation platforms like LeetCode and Codeforces
❄️ Completion of a minimum of 300 problems across LeetCode and Codeforces
❄️ At least 80 active days on LeetCode and Codeforces
❄️ Covered the following topics: Topics Covered
🤖 Selection Process:
❄️ First Round Filtering: Applicants will undergo an initial screening process
❄️ Technical and Behavioral Interviews: Selected candidates from the first round will proceed to technical and behavioral interviews to assess their skills and suitability for the program
📋 Apply now to seize this opportunity and embark on a journey with A2SV!
Google Docs
A2SV - July Convert Topics
A2SV July Convert Topics Python Basics Time & Space Complexity Matrices Sorting Two Pointers Sliding Window Prefix Sum Linked Lists Greedy Stacks, Queues, Monotonicity Recursion Trees Binary Search Numerics Graph DFS (Depth-First Search) BFS (Breadth-First…
🌟 Daily Algorithm Challenge! 🌟
Starting today, I’ll be posting a new question every day to help us prepare for A2SV in November! 💻✨
🗓 Challenge yourself and share your solutions!
Let’s sharpen our skills together. Ready to dive in?
Stay tuned for the first question! 🚀
👍 Like this post if you're excited for the daily algorithm challenges!
Your support motivates us to keep pushing our limits and learning together. Let’s make this journey fun and productive! 🚀
Starting today, I’ll be posting a new question every day to help us prepare for A2SV in November! 💻✨
🗓 Challenge yourself and share your solutions!
Let’s sharpen our skills together. Ready to dive in?
Stay tuned for the first question! 🚀
👍 Like this post if you're excited for the daily algorithm challenges!
Your support motivates us to keep pushing our limits and learning together. Let’s make this journey fun and productive! 🚀
🔥7❤1👍1🎉1
Leetcode with dani
Topic of This Week Linked List
we will work on this algorithm for the coming 7 days.