The AI writes the code now. Can you catch what it got wrong?

Find two numbers that add to a target

Detect a duplicate in a list

Check if two strings are anagrams

Build a note from magazine letters

Find a target in a sorted list

Check if a string is a palindrome

Square a sorted array, keep it sorted

Two-sum on a sorted array

Move all zeroes to the end

Highest-average window of length k

Shortest subarray summing to at least target

Longest substring without repeats

Running sum of an array

Sum of a range, many queries

Find the pivot index

Generate all subsets

All combinations of k from n

Generate all permutations

Combinations that sum to a target

Find where a target belongs

Find the first bad version

Slowest speed to finish in time

Reverse a linked list

Find the middle node

Detect a cycle in a linked list

Valid parentheses

Baseball game score

Min stack with O(1) getMin

Evaluate reverse Polish notation

Maximum depth of a binary tree

Invert a binary tree

Are two trees the same

Is a tree symmetric

Flood fill an image

Count the islands

Largest island by area

Count the provinces

Count connected components

Find the redundant edge

Does the graph form a tree

Sort an array of numbers

Can you attend every meeting

Merge overlapping intervals

Best time to buy and sell (many trades)

Can you reach the last index

Fewest jumps to the end

Count ways to climb stairs

Min cost climbing stairs

House robber

Fewest coins for an amount

Kth largest element

K closest points to the origin

Top k frequent elements

Count the set bits

The number that appears once

Find the missing number