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Prefix Sum Problems - DSA Corner | Talentd

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DSA Corner

Dashboard Questions Topics Companies Sheets

Prefix Sum

Topic

180 coding problems covering Prefix Sum concepts. Master this topic and improve your problem-solving skills.

180

Problems

16

Easy

114

Medium

50

Hard

Difficulty

All180 Easy16 Medium114 Hard50

Status	Title	Video	Leetcode	Solve	Difficulty	Companies	Topics
	2983. Palindrome Rearrangement Queries			Solve	Hard	-	Hash Table Prefix Sum+1
	3015. Count the Number of Houses at a Certain Distance I			Solve	Medium	-	Breadth-First Search Graph+1
	3017. Count the Number of Houses at a Certain Distance II			Solve	Hard	-	Graph Prefix Sum
	3026. Maximum Good Subarray Sum			Solve	Medium	-	Array Hash Table+1
	3028. Ant on the Boundary			Solve	Easy	-	Array Prefix Sum+1
	3070. Count Submatrices with Top-Left Element and Sum Less Than k			Solve	Medium	-	Array Matrix+1
	3077. Maximum Strength of K Disjoint Subarrays			Solve	Hard	-	Array Dynamic Programming+1
	3086. Minimum Moves to Pick K Ones			Solve	Hard	-	Array Greedy+2
	3096. Minimum Levels to Gain More Points			Solve	Medium	-	Array Prefix Sum
	3104. Find Longest Self-Contained Substring			Solve	Hard	-	Binary Search Hash Table+2
	3129. Find All Possible Stable Binary Arrays I			Solve	Medium	-	Dynamic Programming Prefix Sum
	3130. Find All Possible Stable Binary Arrays II			Solve	Hard	-	Dynamic Programming Prefix Sum
	3147. Taking Maximum Energy From the Mystic Dungeon			Solve	Medium	-	Array Prefix Sum
	3152. Special Array II			Solve	Medium	-	Array Binary Search+1
	3179. Find the N-th Value After K Seconds			Solve	Medium	-	Array Combinatorics+3
	3191. Minimum Operations to Make Binary Array Elements Equal to One I			Solve	Medium	-	Array Bit Manipulation+3
	3212. Count Submatrices With Equal Frequency of X and Y			Solve	Medium	-	Array Matrix+1
	3224. Minimum Array Changes to Make Differences Equal			Solve	Medium	-	Array Hash Table+1
	3225. Maximum Score From Grid Operations			Solve	Hard	-	Array Dynamic Programming+2
	3250. Find the Count of Monotonic Pairs I			Solve	Hard	-	Array Combinatorics+3
	3251. Find the Count of Monotonic Pairs II			Solve	Hard	-	Array Combinatorics+3
	3261. Count Substrings That Satisfy K-Constraint II			Solve	Hard	-	Array Binary Search+3
	3279. Maximum Total Area Occupied by Pistons			Solve	Hard	-	Array Counting+4
	3312. Sorted GCD Pair Queries			Solve	Hard	-	Array Binary Search+6
	3333. Find the Original Typed String II			Solve	Hard	-	Dynamic Programming Prefix Sum+1
	3346. Maximum Frequency of an Element After Performing Operations I			Solve	Medium	-	Array Binary Search+3
	3347. Maximum Frequency of an Element After Performing Operations II			Solve	Hard	-	Array Binary Search+3
	3354. Make Array Elements Equal to Zero			Solve	Easy	-	Array Prefix Sum+1
	3355. Zero Array Transformation I			Solve	Medium	-	Array Prefix Sum
	3356. Zero Array Transformation II			Solve	Medium	-	Array Binary Search+1

Palindrome Rearrangement Queries

Hard📹 Video

Hash Table Prefix Sum String

Count the Number of Houses at a Certain Distance I

Medium📹 Video

Breadth-First Search Graph Prefix Sum

Count the Number of Houses at a Certain Distance II

Hard📹 Video

Graph Prefix Sum

Maximum Good Subarray Sum

Medium📹 Video

Array Hash Table Prefix Sum

Ant on the Boundary

Easy📹 Video

Array Prefix Sum Simulation

Count Submatrices with Top-Left Element and Sum Less Than k

Medium📹 Video

Array Matrix Prefix Sum

Maximum Strength of K Disjoint Subarrays

Hard📹 Video

Array Dynamic Programming Prefix Sum

Minimum Moves to Pick K Ones

Hard📹 Video

Array Greedy Prefix Sum+1

Minimum Levels to Gain More Points

Medium📹 Video

Array Prefix Sum

Find Longest Self-Contained Substring

Hard📹 Video

Binary Search Hash Table Prefix Sum+1

Find All Possible Stable Binary Arrays I

Medium📹 Video

Dynamic Programming Prefix Sum

Find All Possible Stable Binary Arrays II

Hard📹 Video

Dynamic Programming Prefix Sum

Taking Maximum Energy From the Mystic Dungeon

Medium📹 Video

Array Prefix Sum

Special Array II

Medium📹 Video

Array Binary Search Prefix Sum

Find the N-th Value After K Seconds

Medium📹 Video

Array Combinatorics Math+2

Minimum Operations to Make Binary Array Elements Equal to One I

Medium📹 Video

Array Bit Manipulation Prefix Sum+2

Count Submatrices With Equal Frequency of X and Y

Medium📹 Video

Array Matrix Prefix Sum

Minimum Array Changes to Make Differences Equal

Medium📹 Video

Array Hash Table Prefix Sum

Maximum Score From Grid Operations

Hard📹 Video

Array Dynamic Programming Matrix+1

Find the Count of Monotonic Pairs I

Hard📹 Video

Array Combinatorics Dynamic Programming+2

Find the Count of Monotonic Pairs II

Hard📹 Video

Array Combinatorics Dynamic Programming+2

Count Substrings That Satisfy K-Constraint II

Hard📹 Video

Array Binary Search Prefix Sum+2

Maximum Total Area Occupied by Pistons

Hard📹 Video

Array Counting Hash Table+3

Sorted GCD Pair Queries

Hard📹 Video

Array Binary Search Combinatorics+5

Find the Original Typed String II

Hard📹 Video

Dynamic Programming Prefix Sum String

Maximum Frequency of an Element After Performing Operations I

Medium📹 Video

Array Binary Search Prefix Sum+2

Maximum Frequency of an Element After Performing Operations II

Hard📹 Video

Array Binary Search Prefix Sum+2

Make Array Elements Equal to Zero

Easy📹 Video

Array Prefix Sum Simulation

Zero Array Transformation I

Medium📹 Video

Array Prefix Sum

Zero Array Transformation II

Medium📹 Video

Array Binary Search Prefix Sum

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