Daily Problem · Thu 17 Sep 2026
#1477 Find Two Non-overlapping Sub-arrays Each With Target Sum
Medium · 43.9% acceptance
Array · Hash Table · Binary Search · Dynamic Programming · Sliding Window
https://leetcode.com/problems/find-two-non-overlapping-sub-arrays-each-with-target-sum/
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#1477 Find Two Non-overlapping Sub-arrays Each With Target Sum
Medium · 43.9% acceptance
Array · Hash Table · Binary Search · Dynamic Programming · Sliding Window
https://leetcode.com/problems/find-two-non-overlapping-sub-arrays-each-with-target-sum/
Join Us @leetcodesolutions @gitrepos
#leetcode #medium #array #hashtable #binarysearch
LeetCode
Find Two Non-overlapping Sub-arrays Each With Target Sum - LeetCode
Can you solve this real interview question? Find Two Non-overlapping Sub-arrays Each With Target Sum - You are given an array of integers arr and an integer target.
You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There…
You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There…
Designing Idle Detection for Robot Datasets: Why We Chose Per-Episode Adaptive Thresholds
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Designing Idle Detection for Robot Datasets: Why We Chose Per-Episode Adaptive Thresholds
Recently someone raised a thoughtful question on our GitHub Issue: Is the 'minimal state change'...
Java Output Methods: Complete Guide to print() vs. println()
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Java Output Methods: Complete Guide to print() vs. println()
Java Output Methods: Complete Guide to print() vs. println() In Java, displaying output on...
Daily Problem · Fri 18 Sep 2026
#1520 Maximum Number of Non-Overlapping Substrings
Hard · 56.5% acceptance
Hash Table · String · Greedy · Sorting
https://leetcode.com/problems/maximum-number-of-non-overlapping-substrings/
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#1520 Maximum Number of Non-Overlapping Substrings
Hard · 56.5% acceptance
Hash Table · String · Greedy · Sorting
https://leetcode.com/problems/maximum-number-of-non-overlapping-substrings/
Join Us @leetcodesolutions @learningdeals
#leetcode #hard #hashtable #string #greedy
LeetCode
Maximum Number of Non-Overlapping Substrings - LeetCode
Can you solve this real interview question? Maximum Number of Non-Overlapping Substrings - Given a string s of lowercase letters, you need to find the maximum number of non-empty substrings of s that meet the following conditions:
1. The substrings do not…
1. The substrings do not…
Daily Problem · Sat 19 Sep 2026
#1401 Circle and Rectangle Overlapping
Medium · 61.7% acceptance
Math · Geometry
https://leetcode.com/problems/circle-and-rectangle-overlapping/
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#1401 Circle and Rectangle Overlapping
Medium · 61.7% acceptance
Math · Geometry
https://leetcode.com/problems/circle-and-rectangle-overlapping/
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#leetcode #medium #math #geometry
LeetCode
Circle and Rectangle Overlapping - LeetCode
Can you solve this real interview question? Circle and Rectangle Overlapping - You are given a circle represented as (radius, xCenter, yCenter) and an axis-aligned rectangle represented as (x1, y1, x2, y2), where (x1, y1) are the coordinates of the bottom…
Daily Problem · Sun 20 Sep 2026
#3498 Reverse Degree of a String
Easy · 91.2% acceptance
String · Simulation
https://leetcode.com/problems/reverse-degree-of-a-string/
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#leetcode #easy #string #simulation
#3498 Reverse Degree of a String
Easy · 91.2% acceptance
String · Simulation
https://leetcode.com/problems/reverse-degree-of-a-string/
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#leetcode #easy #string #simulation
LeetCode
Reverse Degree of a String - LeetCode
Can you solve this real interview question? Reverse Degree of a String - Given a string s, calculate its reverse degree.
The reverse degree is calculated as follows:
1. For each character, multiply its position in the reversed alphabet ('a' = 26, 'b' =…
The reverse degree is calculated as follows:
1. For each character, multiply its position in the reversed alphabet ('a' = 26, 'b' =…
Daily Problem · Mon 21 Sep 2026
#3524 Find X Value of Array I
Medium · 60.3% acceptance
Array · Math · Dynamic Programming
https://leetcode.com/problems/find-x-value-of-array-i/
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#3524 Find X Value of Array I
Medium · 60.3% acceptance
Array · Math · Dynamic Programming
https://leetcode.com/problems/find-x-value-of-array-i/
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#leetcode #medium #array #math #dynamicprogramming
LeetCode
Find X Value of Array I - LeetCode
Can you solve this real interview question? Find X Value of Array I - You are given an array of positive integers nums, and a positive integer k.
You are allowed to perform an operation once on nums, where in each operation you can remove any non-overlapping…
You are allowed to perform an operation once on nums, where in each operation you can remove any non-overlapping…
Namaste JavaScript — Complete Notes
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Namaste JavaScript — Complete Notes
Full interview-prep notes, ##Episode 1 through 29. Episode 1 : Execution...
Daily Problem · Tue 22 Sep 2026
#3525 Find X Value of Array II
Hard · 64.0% acceptance
Array · Math · Segment Tree
https://leetcode.com/problems/find-x-value-of-array-ii/
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#3525 Find X Value of Array II
Hard · 64.0% acceptance
Array · Math · Segment Tree
https://leetcode.com/problems/find-x-value-of-array-ii/
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#leetcode #hard #array #math #segmenttree
LeetCode
Find X Value of Array II - LeetCode
Can you solve this real interview question? Find X Value of Array II - You are given an array of positive integers nums and a positive integer k. You are also given a 2D array queries, where queries[i] = [indexi, valuei, starti, xi].
You are allowed to perform…
You are allowed to perform…
Daily Problem · Wed 23 Sep 2026
#1658 Minimum Operations to Reduce X to Zero
Medium · 42.9% acceptance
Array · Hash Table · Binary Search · Sliding Window · Prefix Sum
https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero/
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#1658 Minimum Operations to Reduce X to Zero
Medium · 42.9% acceptance
Array · Hash Table · Binary Search · Sliding Window · Prefix Sum
https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero/
Join Us @leetcodesolutions @learningdeals
#leetcode #medium #array #hashtable #binarysearch
LeetCode
Minimum Operations to Reduce X to Zero - LeetCode
Can you solve this real interview question? Minimum Operations to Reduce X to Zero - You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value…
Daily Problem · Thu 24 Sep 2026
#3550 Smallest Index With Digit Sum Equal to Index
Easy · 83.8% acceptance
Array · Math
https://leetcode.com/problems/smallest-index-with-digit-sum-equal-to-index/
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#leetcode #easy #array #math
#3550 Smallest Index With Digit Sum Equal to Index
Easy · 83.8% acceptance
Array · Math
https://leetcode.com/problems/smallest-index-with-digit-sum-equal-to-index/
Join Us @leetcodesolutions @learningdeals
#leetcode #easy #array #math
LeetCode
Smallest Index With Digit Sum Equal to Index - LeetCode
Can you solve this real interview question? Smallest Index With Digit Sum Equal to Index - You are given an integer array nums.
Return the smallest index i such that the sum of the digits of nums[i] is equal to i.
If no such index exists, return -1.
…
Return the smallest index i such that the sum of the digits of nums[i] is equal to i.
If no such index exists, return -1.
…
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Daily Problem · Fri 25 Sep 2026
#1096 Brace Expansion II
Hard · 74.1% acceptance
Hash Table · String · Backtracking · Stack · Breadth-First Search · Sorting
https://leetcode.com/problems/brace-expansion-ii/
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#leetcode #hard #hashtable #string #backtracking
#1096 Brace Expansion II
Hard · 74.1% acceptance
Hash Table · String · Backtracking · Stack · Breadth-First Search · Sorting
https://leetcode.com/problems/brace-expansion-ii/
Join Us @leetcodesolutions @gitrepos
#leetcode #hard #hashtable #string #backtracking
LeetCode
Brace Expansion II - LeetCode
Can you solve this real interview question? Brace Expansion II - Under the grammar given below, strings can represent a set of lowercase words. Let R(expr) denote the set of words the expression represents.
The grammar can best be understood through simple…
The grammar can best be understood through simple…
Daily Problem · Sat 26 Sep 2026
#1807 Evaluate the Bracket Pairs of a String
Medium · 78.0% acceptance
Array · Hash Table · String
https://leetcode.com/problems/evaluate-the-bracket-pairs-of-a-string/
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#1807 Evaluate the Bracket Pairs of a String
Medium · 78.0% acceptance
Array · Hash Table · String
https://leetcode.com/problems/evaluate-the-bracket-pairs-of-a-string/
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#leetcode #medium #array #hashtable #string
LeetCode
Evaluate the Bracket Pairs of a String - LeetCode
Can you solve this real interview question? Evaluate the Bracket Pairs of a String - You are given a string s that contains some bracket pairs, with each pair containing a non-empty key.
* For example, in the string "(name)is(age)yearsold", there are two…
* For example, in the string "(name)is(age)yearsold", there are two…
Daily Problem · Sun 27 Sep 2026
#1190 Reverse Substrings Between Each Pair of Parentheses
Medium · 73.9% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/
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#leetcode #medium #string #stack #bracketsequences
#1190 Reverse Substrings Between Each Pair of Parentheses
Medium · 73.9% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/
Join Us @leetcodesolutions @epicgamefree
#leetcode #medium #string #stack #bracketsequences
LeetCode
Reverse Substrings Between Each Pair of Parentheses - LeetCode
Can you solve this real interview question? Reverse Substrings Between Each Pair of Parentheses - You are given a string s that consists of lower case English letters and brackets.
Reverse the strings in each pair of matching parentheses, starting from the…
Reverse the strings in each pair of matching parentheses, starting from the…
Daily Problem · Mon 28 Sep 2026
#1614 Maximum Nesting Depth of the Parentheses
Easy · 85.8% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/maximum-nesting-depth-of-the-parentheses/
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#leetcode #easy #string #stack #bracketsequences
#1614 Maximum Nesting Depth of the Parentheses
Easy · 85.8% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/maximum-nesting-depth-of-the-parentheses/
Join Us @leetcodesolutions @epicgamefree
#leetcode #easy #string #stack #bracketsequences
LeetCode
Maximum Nesting Depth of the Parentheses - LeetCode
Can you solve this real interview question? Maximum Nesting Depth of the Parentheses - Given a valid parentheses string s, return the nesting depth of s. The nesting depth is the maximum number of nested parentheses.
Example 1:
Input: s = "(1+(2*3)+((8)/4))+1"…
Example 1:
Input: s = "(1+(2*3)+((8)/4))+1"…
Daily Problem · Tue 29 Sep 2026
#2267 Check if There Is a Valid Parentheses String Path
Hard · 53.2% acceptance
Array · Dynamic Programming · Matrix · Bracket Sequences
https://leetcode.com/problems/check-if-there-is-a-valid-parentheses-string-path/
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#leetcode #hard #array #dynamicprogramming #matrix
#2267 Check if There Is a Valid Parentheses String Path
Hard · 53.2% acceptance
Array · Dynamic Programming · Matrix · Bracket Sequences
https://leetcode.com/problems/check-if-there-is-a-valid-parentheses-string-path/
Join Us @leetcodesolutions @learningdeals
#leetcode #hard #array #dynamicprogramming #matrix
LeetCode
Check if There Is a Valid Parentheses String Path - LeetCode
Can you solve this real interview question? Check if There Is a Valid Parentheses String Path - A parentheses string is a non-empty string consisting only of '(' and ')'. It is valid if any of the following conditions is true:
* It is ().
* It can be…
* It is ().
* It can be…
Daily Problem · Wed 30 Sep 2026
#1111 Maximum Nesting Depth of Two Valid Parentheses Strings
Medium · 80.2% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/maximum-nesting-depth-of-two-valid-parentheses-strings/
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#1111 Maximum Nesting Depth of Two Valid Parentheses Strings
Medium · 80.2% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/maximum-nesting-depth-of-two-valid-parentheses-strings/
Join Us @leetcodesolutions @gitrepos
#leetcode #medium #string #stack #bracketsequences
LeetCode
Maximum Nesting Depth of Two Valid Parentheses Strings - LeetCode
Can you solve this real interview question? Maximum Nesting Depth of Two Valid Parentheses Strings - A string is a valid parentheses string (denoted VPS) if and only if it consists of "(" and ")" characters only, and:
* It is the empty string, or
* It…
* It is the empty string, or
* It…
Sorting a million rows in JavaScript, and where the time actually goes
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Sorting a million rows in JavaScript, and where the time actually goes
Our data grid can sort a million rows in the browser without freezing the page. Getting there took...
Daily Problem · Thu 01 Oct 2026
#20 Valid Parentheses
Easy · 45.1% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/valid-parentheses/
Join Us @leetcodesolutions @gitrepos
#leetcode #easy #string #stack #bracketsequences
#20 Valid Parentheses
Easy · 45.1% acceptance
String · Stack · Bracket Sequences
https://leetcode.com/problems/valid-parentheses/
Join Us @leetcodesolutions @gitrepos
#leetcode #easy #string #stack #bracketsequences
LeetCode
Valid Parentheses - LeetCode
Can you solve this real interview question? Valid Parentheses - Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
An input string is valid if:
1. Open brackets must be closed by the…
An input string is valid if:
1. Open brackets must be closed by the…
Daily Problem · Fri 02 Oct 2026
#22 Generate Parentheses
Medium · 79.5% acceptance
String · Dynamic Programming · Backtracking · Bracket Sequences
https://leetcode.com/problems/generate-parentheses/
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#leetcode #medium #string #dynamicprogramming #backtracking
#22 Generate Parentheses
Medium · 79.5% acceptance
String · Dynamic Programming · Backtracking · Bracket Sequences
https://leetcode.com/problems/generate-parentheses/
Join Us @leetcodesolutions @gitrepos
#leetcode #medium #string #dynamicprogramming #backtracking
LeetCode
Generate Parentheses - LeetCode
Can you solve this real interview question? Generate Parentheses - Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
Example 1:
Input: n = 3
Output: ["((()))","(()())","(())()","()(())","()()()"]…
Example 1:
Input: n = 3
Output: ["((()))","(()())","(())()","()(())","()()()"]…