fix: standardize CSV headers, normalize acceptance rates, add validation tooling

.github/workflows/validate.yml

@@ -0,0 +1,21 @@
+name: Validate CSVs
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Validate CSV files
+        run: python scripts/validate_csvs.py

.gitignore

@@ -1 +1,9 @@
 .DS_Store
+__pycache__/
+*.pyc
+.env
+.venv/
+venv/
+*.egg-info/
+dist/
+build/

AMD/1. Thirty Days.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AMD/2. Three Months.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AMD/3. Six Months.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AMD/4. More Than Six Months.csv

@@ -1,9 +1,9 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-MEDIUM,Spiral Matrix,100.0,0.539398836789508,https://leetcode.com/problems/spiral-matrix,"Array, Matrix, Simulation"
-MEDIUM,Rotate Image,100.0,0.7790173789665304,https://leetcode.com/problems/rotate-image,"Array, Math, Matrix"
-EASY,Number of 1 Bits,88.0,0.7450480575885099,https://leetcode.com/problems/number-of-1-bits,"Divide and Conquer, Bit Manipulation"
-EASY,Climbing Stairs,88.0,0.535407976724555,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
-EASY,Two Sum,88.0,0.5577702651795842,https://leetcode.com/problems/two-sum,"Array, Hash Table"
-MEDIUM,Longest Substring Without Repeating Characters,88.0,0.36936144977400187,https://leetcode.com/problems/longest-substring-without-repeating-characters,"Hash Table, String, Sliding Window"
-MEDIUM,3Sum,88.0,0.3707108091763312,https://leetcode.com/problems/3sum,"Array, Two Pointers, Sorting"
-MEDIUM,Kth Largest Element in an Array,88.0,0.6797703802112421,https://leetcode.com/problems/kth-largest-element-in-an-array,"Array, Divide and Conquer, Sorting, Heap (Priority Queue), Quickselect"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+MEDIUM,Spiral Matrix,100.0,53.9,https://leetcode.com/problems/spiral-matrix,"Array, Matrix, Simulation"
+MEDIUM,Rotate Image,100.0,77.9,https://leetcode.com/problems/rotate-image,"Array, Math, Matrix"
+EASY,Number of 1 Bits,88.0,74.5,https://leetcode.com/problems/number-of-1-bits,"Divide and Conquer, Bit Manipulation"
+EASY,Climbing Stairs,88.0,53.5,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
+EASY,Two Sum,88.0,55.8,https://leetcode.com/problems/two-sum,"Array, Hash Table"
+MEDIUM,Longest Substring Without Repeating Characters,88.0,36.9,https://leetcode.com/problems/longest-substring-without-repeating-characters,"Hash Table, String, Sliding Window"
+MEDIUM,3Sum,88.0,37.1,https://leetcode.com/problems/3sum,"Array, Two Pointers, Sorting"
+MEDIUM,Kth Largest Element in an Array,88.0,68.0,https://leetcode.com/problems/kth-largest-element-in-an-array,"Array, Divide and Conquer, Sorting, Heap (Priority Queue), Quickselect"

AMD/5. All.csv

@@ -1,12 +1,12 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-MEDIUM,Rotate Image,100.0,0.7790173789665304,https://leetcode.com/problems/rotate-image,"Array, Math, Matrix"
-MEDIUM,Spiral Matrix,100.0,0.539398836789508,https://leetcode.com/problems/spiral-matrix,"Array, Matrix, Simulation"
-EASY,Number of 1 Bits,100.0,0.7450480575885099,https://leetcode.com/problems/number-of-1-bits,"Divide and Conquer, Bit Manipulation"
-EASY,Two Sum,100.0,0.5577702792380397,https://leetcode.com/problems/two-sum,"Array, Hash Table"
-MEDIUM,Longest Substring Without Repeating Characters,87.5,0.36936144977400187,https://leetcode.com/problems/longest-substring-without-repeating-characters,"Hash Table, String, Sliding Window"
-EASY,Climbing Stairs,87.5,0.535407976724555,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
-MEDIUM,Kth Largest Element in an Array,87.5,0.6797703802112421,https://leetcode.com/problems/kth-largest-element-in-an-array,"Array, Divide and Conquer, Sorting, Heap (Priority Queue), Quickselect"
-MEDIUM,Subarray Sum Equals K,87.5,0.4547633179081555,https://leetcode.com/problems/subarray-sum-equals-k,"Array, Hash Table, Prefix Sum"
-EASY,Roman to Integer,87.5,0.6486637744329325,https://leetcode.com/problems/roman-to-integer,"Hash Table, Math, String"
-MEDIUM,Merge Intervals,87.5,0.4939525764689584,https://leetcode.com/problems/merge-intervals,"Array, Sorting"
-MEDIUM,3Sum,87.5,0.3707108091763312,https://leetcode.com/problems/3sum,"Array, Two Pointers, Sorting"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+MEDIUM,Rotate Image,100.0,77.9,https://leetcode.com/problems/rotate-image,"Array, Math, Matrix"
+MEDIUM,Spiral Matrix,100.0,53.9,https://leetcode.com/problems/spiral-matrix,"Array, Matrix, Simulation"
+EASY,Number of 1 Bits,100.0,74.5,https://leetcode.com/problems/number-of-1-bits,"Divide and Conquer, Bit Manipulation"
+EASY,Two Sum,100.0,55.8,https://leetcode.com/problems/two-sum,"Array, Hash Table"
+MEDIUM,Longest Substring Without Repeating Characters,87.5,36.9,https://leetcode.com/problems/longest-substring-without-repeating-characters,"Hash Table, String, Sliding Window"
+EASY,Climbing Stairs,87.5,53.5,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
+MEDIUM,Kth Largest Element in an Array,87.5,68.0,https://leetcode.com/problems/kth-largest-element-in-an-array,"Array, Divide and Conquer, Sorting, Heap (Priority Queue), Quickselect"
+MEDIUM,Subarray Sum Equals K,87.5,45.5,https://leetcode.com/problems/subarray-sum-equals-k,"Array, Hash Table, Prefix Sum"
+EASY,Roman to Integer,87.5,64.9,https://leetcode.com/problems/roman-to-integer,"Hash Table, Math, String"
+MEDIUM,Merge Intervals,87.5,49.4,https://leetcode.com/problems/merge-intervals,"Array, Sorting"
+MEDIUM,3Sum,87.5,37.1,https://leetcode.com/problems/3sum,"Array, Two Pointers, Sorting"

AQR Capital Management/1. Thirty Days.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AQR Capital Management/2. Three Months.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AQR Capital Management/3. Six Months.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

AQR Capital Management/4. More Than Six Months.csv

@@ -1,3 +1,3 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-MEDIUM,Jump Game VI,100.0,0.4599694033656298,https://leetcode.com/problems/jump-game-vi,"Array, Dynamic Programming, Queue, Heap (Priority Queue), Monotonic Queue"
-EASY,Missing Number,89.0,0.7006536003915764,https://leetcode.com/problems/missing-number,"Array, Hash Table, Math, Binary Search, Bit Manipulation, Sorting"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+MEDIUM,Jump Game VI,100.0,46.0,https://leetcode.com/problems/jump-game-vi,"Array, Dynamic Programming, Queue, Heap (Priority Queue), Monotonic Queue"
+EASY,Missing Number,89.0,70.1,https://leetcode.com/problems/missing-number,"Array, Hash Table, Math, Binary Search, Bit Manipulation, Sorting"

AQR Capital Management/5. All.csv

@@ -1,4 +1,4 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-MEDIUM,Jump Game VI,100.0,0.4599694033656298,https://leetcode.com/problems/jump-game-vi,"Array, Dynamic Programming, Queue, Heap (Priority Queue), Monotonic Queue"
-EASY,Missing Number,63.1,0.7006536003915764,https://leetcode.com/problems/missing-number,"Array, Hash Table, Math, Binary Search, Bit Manipulation, Sorting"
-EASY,Best Time to Buy and Sell Stock,63.1,0.5525969088759799,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+MEDIUM,Jump Game VI,100.0,46.0,https://leetcode.com/problems/jump-game-vi,"Array, Dynamic Programming, Queue, Heap (Priority Queue), Monotonic Queue"
+EASY,Missing Number,63.1,70.1,https://leetcode.com/problems/missing-number,"Array, Hash Table, Math, Binary Search, Bit Manipulation, Sorting"
+EASY,Best Time to Buy and Sell Stock,63.1,55.3,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"

Accenture/1. Thirty Days.csv

@@ -1 +1 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics

Accenture/2. Three Months.csv

@@ -1,2 +1,2 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-EASY,Best Time to Buy and Sell Stock,100.0,0.5525962294861477,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+EASY,Best Time to Buy and Sell Stock,100.0,55.3,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"

Accenture/3. Six Months.csv

@@ -1,11 +1,11 @@
-Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
-MEDIUM,Maximum Subarray,100.0,0.5209980487725024,https://leetcode.com/problems/maximum-subarray,"Array, Divide and Conquer, Dynamic Programming"
-EASY,Move Zeroes,100.0,0.6280403369085903,https://leetcode.com/problems/move-zeroes,"Array, Two Pointers"
-MEDIUM,Number of Islands,87.1,0.6232001096557939,https://leetcode.com/problems/number-of-islands,"Array, Depth-First Search, Breadth-First Search, Union Find, Matrix"
-HARD,Divide Nodes Into the Maximum Number of Groups,87.1,0.6736557431799484,https://leetcode.com/problems/divide-nodes-into-the-maximum-number-of-groups,"Depth-First Search, Breadth-First Search, Union Find, Graph"
-EASY,Fibonacci Number,87.1,0.7294492271152765,https://leetcode.com/problems/fibonacci-number,"Math, Dynamic Programming, Recursion, Memoization"
-EASY,Majority Element,87.1,0.657403169331404,https://leetcode.com/problems/majority-element,"Array, Hash Table, Divide and Conquer, Sorting, Counting"
-EASY,Intersection of Two Arrays,87.1,0.7647431845238689,https://leetcode.com/problems/intersection-of-two-arrays,"Array, Hash Table, Two Pointers, Binary Search, Sorting"
-MEDIUM,Koko Eating Bananas,87.1,0.4906724004144251,https://leetcode.com/problems/koko-eating-bananas,"Array, Binary Search"
-EASY,Climbing Stairs,87.1,0.5354071218159873,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
-EASY,Best Time to Buy and Sell Stock,87.1,0.5525962294861477,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"
+Difficulty,Title,Frequency,Acceptance Rate,Link,Topics
+MEDIUM,Maximum Subarray,100.0,52.1,https://leetcode.com/problems/maximum-subarray,"Array, Divide and Conquer, Dynamic Programming"
+EASY,Move Zeroes,100.0,62.8,https://leetcode.com/problems/move-zeroes,"Array, Two Pointers"
+MEDIUM,Number of Islands,87.1,62.3,https://leetcode.com/problems/number-of-islands,"Array, Depth-First Search, Breadth-First Search, Union Find, Matrix"
+HARD,Divide Nodes Into the Maximum Number of Groups,87.1,67.4,https://leetcode.com/problems/divide-nodes-into-the-maximum-number-of-groups,"Depth-First Search, Breadth-First Search, Union Find, Graph"
+EASY,Fibonacci Number,87.1,72.9,https://leetcode.com/problems/fibonacci-number,"Math, Dynamic Programming, Recursion, Memoization"
+EASY,Majority Element,87.1,65.7,https://leetcode.com/problems/majority-element,"Array, Hash Table, Divide and Conquer, Sorting, Counting"
+EASY,Intersection of Two Arrays,87.1,76.5,https://leetcode.com/problems/intersection-of-two-arrays,"Array, Hash Table, Two Pointers, Binary Search, Sorting"
+MEDIUM,Koko Eating Bananas,87.1,49.1,https://leetcode.com/problems/koko-eating-bananas,"Array, Binary Search"
+EASY,Climbing Stairs,87.1,53.5,https://leetcode.com/problems/climbing-stairs,"Math, Dynamic Programming, Memoization"
+EASY,Best Time to Buy and Sell Stock,87.1,55.3,https://leetcode.com/problems/best-time-to-buy-and-sell-stock,"Array, Dynamic Programming"