Trimming is the process of removing some characters from the beginning or end of a string, such as whitespaces, punctuation marks, digits, etc.
Identify the longest substring within a given input string that forms a palindrome, which is a sequence of characters that reads the same forwards as it does backward.
While forEach method is commonly used to iterate through arrays, it can also be chained with Object.keys, Object.values, and Object.entries to iterate object key-value pairs.
This can be useful when the initial value of a variable is expensive to compute, or when it is not needed until it is actually used in the code.
This problem typically asks you to implement a function or method that takes a Roman numeral as input and returns the corresponding integer.
We will explore the top 10 problems on LeetCode that have consistently stumped and challenged developers worldwide.
A classic coding challenge that asks you to find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
A classic algorithmic problem that involves merging overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input.
A palindrome is a number that reads the same forwards and backward. In other words, when its digits are reversed, the resulting number remains the same.
You have to reverse the digits of a given 32-bit integer and return the reversed integer. If the reversed integer is out of the range of 32-bit integers, you should return 0.
When dealing with sensitive data, by selecting only the keys you need, you can create a new object that contains a more concise and relevant subset of data.
The problem of Course Schedule on LeetCode is to determine if it is possible to finish all courses given the prerequisites.