Minimum count of squares leetcode. Perfect Squares is a Leetcode medium level problem.
Minimum count of squares leetcode. - Mohamed-Elwaei/Leetcode-Solutions I am having trouble understanding one of a Leetcode Problem. * Given a query point, counts the number of ways to choose three points from the data structure such that the three points and Can you solve this real interview question? Count Square Submatrices with All Ones - Given a m * n matrix of ones and zeros, return how many square submatrices have all ones. Given a row x col grid of integers, how many 3 x 3 magic square subgrids are there? Note: while a magic square can only contain numbers from 1 to 9, grid may contain numbers up to Oct 27, 2024 · The Maximal Square problem requires us to find the maximum number of squares containing only 1 s that can be formed within a given binary matrix having 0’s and 1’s. A square-free integer is an integer that is divisible by no square number other than 1. A perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. Example 1: Input: c = 5 Output: true Explanation: 1 * 1 + 2 * 2 = 5 Example 2: Input: c = 3 Output: false Constraints: * 0 <= c <= 231 - 1 Nov 4, 2020 · Trying to solve this problem with recursion and memoization but for input 7168 I'm getting wrong answer. 3 Apna College 6. In-depth solution and explanation for LeetCode 2013. The robot can only move either down or right at any point in time. The stick is labelled from 0 to n. Number of Ways to Stay in the Same Place After Some Steps 1272. Can you solve this real interview question? Minimum Path Sum - Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right, which minimizes the sum of all numbers along its path. Delete Tree Nodes 1274. Search Suggestions System 1269. Sum of Square Numbers Table of contents Description Solutions Solution 1: Mathematics + Two Pointers Solution 2: Mathematics LeetCode solutions in any programming language3733. Duplicate points are allowed and should be treated as different points. Given a number N, the task is to represent N as the sum of minimum square numbers. Input: 63 Output: 4 63 can be represented as 7 2 + 3 2 + 2 Given a wooden stick of length n units. Tiling a Rectangle with the Fewest Squares in Python, Java, C++ and more. The value of a string is defined as the sum of squares of the count of each distinct character. Dec 30, 2020 · 0:00 19:50 • Read the problem Maximal Square - Top Down Memoization - Leetcode 221 NeetCode 929K subscribers Subscribed Sep 2, 2019 · https://leetcode. Perfect Squares Description Solutions Solution 1 Solution 2 Find the solution of Tiling a Rectangle with the Fewest Squares Leetcode question with step by step explanation in 2 approaches and 3 solutions in languages like Java, CPP, Python. Intuitions, example walk through, and complexity analysis. length <= min (n - 1, 100) * 1 <= cuts [i] <= n - 1 * All the integers in cuts array are distinct. You are given integers m, n, and two arrays: * horizontalCut of size m - 1, where horizontalCut[i] represents the cost to cut along the horizontal line i. By finding these optimal substructures, we can efficiently calculate the minimum perfect squares that sum to given number. You need to perform some operations such that each cell grid[i][j] is: * Equal to the cell below it, i. Examples Input n = 12 Output 3 Explanation 12 = 4 + 4 + 4 Input n = 13 Output 2 Explanation 13 = 4 + 9 Constraints 1 ≤ n ≤ 10⁴ Hints You can view the problem as finding the shortest path from n down to 0 by subtracting Can you solve this real interview question? Count the Number of Square-Free Subsets - You are given a positive integer 0-indexed array nums. Minimum Window Substring - Airbnb Interview Question - Leetcode 76 12 Times Sheldon Showed His True Genius | The Big Bang Theory Tom Hardy Silences the Gym Bully (Full Scene) | Warrior 279. For example, 1, 4, 9, and 16 are perfect squares while 3 and 11 are not. Count Square Submatrices with All Ones - LeetCode Wiki Home Cracking the Coding Interview Focused Training Contest LeetCode Wiki doocs/leetcode Home LeetCode LeetCode 276. Example 1: Input: n = 12 Output: 3 Explanation In-depth solution and explanation for LeetCode 1277. In other words, it is the product of some integer with itself. What Is LeetCode 279: Perfect Squares? In LeetCode 279: Perfect Squares, you’re given a positive integer n, and your task is to find the smallest number of perfect squares (numbers like 1, 4, 9, 16, etc. The sum of squared difference of arrays nums1 and nums2 is defined as the sum of (nums1[i] - nums2[i])2 for each 0 <= i < n. You will buy an axis-aligned square plot of land that is centered at (0, 0). LeetCode solutions in any programming language633. Oct 26, 2024 · For each 1 in the matrix, the square size is calculated as 1 plus the minimum of adjacent squares (top, left, and top-left). You should not break any stick, but you can link them up, and each matchstick must be used exactly one time. LeetCode solutions in any programming language. li. First Bad Version 279. You are also given two positive integers k1 and k2. Perfect Squares in Python, Java, C++ and more. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13, return 2 because 13 = 4 + 9. In-depth solution and explanation for LeetCode 279. LeetCode solutions in any programming language Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ) which sum to n. Can you solve this real interview question? Sum of Square Numbers - Given a non-negative integer c, decide whether there're two integers a and b such that a2 + b2 = c. Count Square Submatrices with All Ones 1296. e. ) that add up to n. Word Squares 🔒 425. Dynamic programming was the suitable approach, where I iteratively built the solution Any numbers can be represented by the sum of some perfect square numbers. Example 1: Input: n = 12 Output: 3 This video explains an important programming interview problem which is to find the minimum number of sqaures which can be added to form a givennumber N. , grid[0][0]). 34K subscribers Subscribed Can you solve this real interview question? Knight Probability in Chessboard - On an n x n chessboard, a knight starts at the cell (row, column) and attempts to make exactly k moves. It takes n steps to reach the top. This is the best place to expand your knowledge and get prepared for your next interview. Examples: Input: n = 100 Output: 1 Explanation: 10 * 10 = 100 Input: n = 6 Output: 3 Explanation = 1 * 1 + 1 * 1 + 2 * 2 = 6 Expected Time C Solutions to all the Leetcode problems I have solved. The rows and columns are 0-indexed, so the top-left cell is (0, 0), and the bottom-right cell is (n - 1, n - 1). Jul 23, 2025 · Minimum perfect squares that add to n. The time complexity is… In this post, we are going to solve the 279. Note that the same perfect square can be used multiple times. Given the two integers m and n, return the number of possible unique paths that Can you solve this real interview question? Valid Perfect Square - Given a positive integer num, return true if num is a perfect square or false otherwise. Constraints: * 2 <= n <= 106 * 1 <= cuts. For example, Input: 100 Output: 1 100 is a perfect square. A subset of the array nums is square-free if the product of its elements is a square-free integer. Mar 9, 2022 · Side note: according to Lagrange theorem, any number can be represented as a sum of four squares. Leetcode all problems list, with company tags and solutions. Can you solve this real interview question? Detect Squares - You are given a stream of points on the X-Y plane. For example, given n= 12, return 3 because 12 = 4 + 4 + 4; given n= 13, return 2 because 13 = 4 + 9. Find the Celebrity 🔒 278. Initialize Min Count: Initialize a variable `minCount` to store the minimum count of perfect squares needed to sum up to `n`. Perfect Squares problem of Leetcode. Examples: Input : 10 Output : 1 + 9 These are all possible ways 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 1 + 1 + 1 + 1 + 1 + 1 + 4 1 + 1 + 4 + 4 1 + 9 Choose Sep 22, 2018 · LeetCode #279 Perfect Squares Medium Problem Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ) which sum to n. For example, perfect squares such as 1 1, 4 4, 9 9, and 16 16 can be used in the sum, but numbers like 5 5 and 10 10 cannot. 1263. Given that you can only move the white pieces, return the minimum number of moves required to capture the black queen. Count Square Submatrices with All Ones Given a m * n matrix of ones and zeros, return how many square submatrices have all ones. Each time you can either climb 1 or 2 steps. Can you solve this real interview question? Climbing Stairs - You are climbing a staircase. Input: 10 Output: 2 10 can be represented as 3 2 + 1 2. i. Example 1: Input: num = 16 Output: true Problem Statement Given a positive integer n, find the smallest number of perfect square numbers (e. There is 1 square of side 3. So you can check if number is a perfect square, sum of two perfect squares, threes squares and, finally, four squates. Can you solve this real interview question? Matchsticks to Square - You are given an integer array matchsticks where matchsticks[i] is the length of the ith matchstick. A chess knight has eight possible moves it can make, as illustrated below. Return that minimum count. Remove Interval 1273. Set its initial value to `INT_MAX` to find the minimum later. 3K Sep 9, 2025 · Find the minimum number of squares that sum to a given number Given a positive integer n, find the minimum number of squares that sums to n. Examples: Input : 36 x 30 Output : 5 Explanation : 3 (squares of size 12x12) + 2 (squares of size 18x18) Input : 4 x 5 Output : 5 Explanation : 1 (squares of size 4x4) + 4 (squares of size 1x1) Asked in : Google We have already discussed the Greedy LeetCode solutions in any programming language977. Example 1: Input: n = 12 Output: 3 Explanation Can you solve this real interview question? Detect Squares - You are given a stream of points on the X-Y plane. Total number of squares = 10 + 4 + 1 = 15 Level up your coding skills and quickly land a job. Detailed solution and code for LeetCode Problem 1277: Count Square Submatrices with All Ones on SyntaxHut. Perfect Squares Description Given an integer n, return the least number of perfect square numbers that sum to n. com/problems/count-t) Contest :- Leetcode weekly contest 333 solutionmore Feb 8, 2024 · It is a problem of finding the minimum number of square numbers. 1 step + 1 step 2. Perfect Squares 279. Minimum Moves to Move a Box to Their Target Location 1268. A perfect square is an integer that is the square of an integer. Can you solve this real interview question? Tiling a Rectangle with the Fewest Squares - Given a rectangle of size n x m, return the minimum number of integer-sided squares that tile the rectangle. Divide Array in Sets of K Consecutive Numbers 1297. Perfect Squares is a Leetcode medium level problem. Perfect Squares - Given an integer n, return the least number of perfect square numbers that sum to n. Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ) which sum ton. You must not use any built-in library function, such as sqrt. Credits:Special thanks to @jianchao. Find the minimum number of squares that can be cut from the paper. Can you solve this real interview question? Magic Squares In Grid - A 3 x 3 magic square is a 3 x 3 grid filled with distinct numbers from 1 to 9 such that each row, column, and both diagonals all have the same sum. Count Square Submatrices with All Ones Difficulty: Medium Topics: Array, Dynamic Programming, Tagged with php, leetcode, algorithms, programming. so the answer will be 4 The idea is to start from 1, we move further to get perfect squared Can you solve this real interview question? Unique Paths - There is a robot on an m x n grid. * Given a query point, counts the number of ways to choose three points from the data structure such that the three points and Given that you can only move the white pieces, return the minimum number of moves required to capture the black queen. Given an integer n, determine the minimum number of perfect square numbers that add up to n. let the value is 94,so 95 = 9 2 + 3 2 + 2 2 + 1 2. There are 4 squares of side 2. Sum of Square Numbers 633. * Different from Find the solution of Magic Squares In Grid Leetcode question with step by step explanation in 2 approaches and 4 solutions in languages like Java, JavaScript, CPP, Python. Squares of a Sorted Array - Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order. Each move is two cells in Minimum Number of Squares - Dynamic Programming | C++ Placement Course | Lecture 35. Your task is to find the smallest count of these perfect square numbers needed to sum exactly to the given integer n Can you solve this real interview question? Sum of Square Numbers - Given a non-negative integer c, decide whether there're two integers a and b such that a2 + b2 = c. Example 1: Input: matrix = [ [0,1,1,1], [1,1,1,1], [0,1,1,1] ] Output: 15 Explanation: There are 10 squares of side 1. , minSquares (n), depends on the optimal solutions of the subproblems minSquares (n - x2). Jul 18, 2024 · Given a paper of size A x B. The robot tries to move to the bottom-right corner (i. * Bishops can move any number of squares diagonally, but cannot jump over other pieces. Example 1: Solution The solution uses dynamic programming. The cost of one cut is the length of the stick to be cut, the total cost is the sum of Jun 12, 2023 · Solution 1: Dynamic Programming Let us call the function to be computed numSquares (n), which calculates the least number of perfect squares that sum to n. For example, Can you solve this real interview question? Count Square Submatrices with All Ones - Given a m * n matrix of ones and zeros, return how many square submatrices have all ones. Let’s see the code, 279. Minimum Time to Complete All Deliveries - LeetCode Wiki Home LeetCode Cracking the Coding Interview Focused Training Contest LeetCode Wiki doocs/leetcode Home LeetCode LeetCode 3Sum Minimum Window Substring Count number of occurrences (or frequency) in a sorted array Count NO2 Merge k Sorted Lists Kth Largest Element in an Array Move Zeros Remove Invalid Parenthesis friends Integer to English Islands Valid Palindrome sec Longest Increasing Path in a Matrix Product of Array Except Self Binary Tree Vertical Order 422. Example 2: Input: n = 13 Output: 2 Explanation Problem Statement The Perfect Squares LeetCode Solution – “Perfect Squares” states that given an integer n and you need to return the minimum number of perfect squares whose sum equals to n. We c Jul 12, 2025 · A number can always be represented as a sum of squares of other numbers. For example, a stick of length 6 is labelled as follows: Given an integer array cuts where cuts[i] denotes a position you should perform a cut at. 1, 4, 9, 16, …) whose sum equals n. For each number i from 1 to n, we iterate over all perfect squares j j that are less than or equal to i and update dp [i] to be the minimum of its current value or 1 + dp [i - j j]. LeetCode solutions in any programming language1277. Can you solve this real interview question? Perfect Squares - Given an integer n, return the least number of perfect square numbers that sum to n. Perfect Squares – Leetcode Solution. Note that 1 is a square, and we can always break a number as (1*1 + 1*1 + 1*1 + …). You are given a 2D integer array positions where positions[i] = [lefti, sideLengthi] represents the ith square with a side length of sideLengthi that is dropped with its left edge aligned with X-coordinate lefti. You want to use all the matchsticks to make one square. Example 1: Input: n = 12 Output: 3 Explanation: 12 = 4 + 4 + 4. Better than official and forum solutions. It can be solved using Dynamic Programming. Given a row x col grid of integers, how many 3 x 3 magic square subgrids are there? Note: while a magic square can only contain numbers from 1 to 9, grid may contain numbers up to Description Given an m x n binary matrix filled with 0 's and 1 's, find the largest square containing only1 's and return its area. Longest Repeating Character Replacement 425. Count the Number of Square-Free Subsets | Weekly Contest 333 | Leetcode codingMohan 6. Count Square Submatrices with All Ones in Python, Java, C++ and more. Perfect Squares - Given an integer n, return the least number of perfect square numbers that sum to n. * verticalCut of size n - 1, where verticalCut[j] represents the cost to cut along the vertical Nov 24, 2023 · Understand how to solve the leetcode problem of Perfect Square to find minimum perfect squares that sum up to a given number. Valid Word Square 🔒 423. Total number of squares = 10 + 4 + 1 = 15 Can you solve this real interview question? Falling Squares - There are several squares being dropped onto the X-axis of a 2D plane. 2 steps Example 2: Input: n = 3 Output: 3 Explanation: There Oct 27, 2024 · 1277. Number of Ships in a Rectangle 1277. Jun 18, 2023 · After the dp process done, sum up all the numbers in this new matrix, there will be the total count of squares! 1+1+1+1+1+2+2+1+2+3 = 15 possible squares! Here is the code: Given a number n, find the minimum number of perfect squares (square of an integer) that sum up to n. Start with Lagrange four-squares theorem, and follow the links for three-squares, and two-squares theorems. Paint Fence 🔒 277. fighter for adding this problem and creating all test cases. Given an integer n, return the least number of perfect square numbers that sum to n. Sep 4, 2016 · Welcome to Subscribe On Youtube 279. Note that: * Rooks can move any number of squares either vertically or horizontally, but cannot jump over other pieces. We construct an array dp where dp [i] represents the minimum number of perfect squares that sum up to i. The apple tree planted at an integer coordinate (i, j) has |i| + |j| apples growing on it. In one operation, you can change the value of any cell to any non-negative number. Dec 17, 2021 · Maximal square | Dynamic programming | Leetcode #221 | Largest Square Submatrix of all 1's Code with Alisha 30. In-depth solution and explanation for LeetCode 1240. Perfect Squares Dynamic Programming | Leetcode 279 Solution in JAVA Pepcoding 213K subscribers 805 Can you solve this real interview question? Tiling a Rectangle with the Fewest Squares - Given a rectangle of size n x m, return the minimum number of integer-sided squares that tile the rectangle. Problem :- Count number of square free subset (https://leetcode. 6. The robot is initially located at the top-left corner (i. Design an algorithm that: * Adds new points from the stream into a data structure. 5K subscribers 533 Can you solve this real interview question? Minimum Number of Operations to Satisfy Conditions - You are given a 2D matrix grid of size m x n. It can be represented as 10 2. Count Square Submatrices with All Ones - Leetcode 1277 - Python NeetCodeIO 275K subscribers 358 There are much ordering with total cost <= 25, for example, the order [4, 6, 5, 2, 1] has total cost = 22 which is the minimum possible. Word Squares 🔒 Description Solutions Solution 1 Level up your coding skills and quickly land a job. Note: You can only move either down or right at any point in time. Count Square Submatrices with All Ones | Dynamic Programming | Leetcode 1277 Techdose 195K subscribers Subscribe 1277. You can modify any of the elements of nums1 by +1 or Can you solve this real interview question? Maximal Square - Given an m x n binary matrix filled with 0's and 1's, find the largest square containing only 1's and return its area. In this problem, we need to find that how many minimum numbers of perfect square terms are needed to represent the given value. Each square is dropped one at a time from a height Given a string of lowercase alphabets and a number k, the task is to print the minimum value of the string after removal of ‘k’ characters. Return the minimum area of a rectangle formed from these points, with sides parallel to the X and Y axes. This builds up the solution from the base case dp [0] = 0. public int numSquares(int n) { Map<Integer, Integer> memo = new HashMap(); Feb 7, 2024 · Intuition This problem required finding the minimum number of perfect squares that sum up to a given number n. Total number of squares = 10 + 4 + 1 = 15 Minimum Area Rectangle - You are given an array of points in the X-Y plane points where points [i] = [xi, yi]. grid[i][j] == grid[i + 1][j] (if it exists). You should perform the cuts in order, you can change the order of the cuts as you wish. Detect Squares in Python, Java, C++ and more. Squares of a Sorted Array - LeetCode Wiki Home Cracking the Coding Interview Focused Training Contest LeetCode Wiki doocs/leetcode Home LeetCode LeetCode Can you solve this real interview question? Perfect Squares - Given an integer n, return the least number of perfect square numbers that sum to n. Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ) which sum to n. Return true if you can make this square and false otherwise May 6, 2021 · Perfect Squares - Dynamic Programming - Leetcode 279 - Python NeetCode 944K subscribers 1. com/problems/tiling-a-rectangle-with-the-fewest-squares/ Given a rectangle with height and width, find the minimum number of integer-sided squares that tile the rectangle. Reconstruct Original Digits from English 424. Example 1: Input: n = 12 Output: 3 Explanation Level up your coding skills and quickly land a job. 5. This problem 279. g. Given an integer LeetCode solutions in any programming language Can you solve this real interview question? Count Square Submatrices with All Ones - Given a m * n matrix of ones and zeros, return how many square submatrices have all ones. Can you solve this real interview question? Minimum Garden Perimeter to Collect Enough Apples - In a garden represented as an infinite 2D grid, there is an apple tree planted at every integer coordinate. This question has a surprisingly simple solution. Example 1: Input: c = 5 Output: true Explanation: 1 * 1 + 2 * 2 = 5 Example 2: Input: c = 3 Output: false Constraints: * 0 <= c <= 231 - 1 Can you solve this real interview question? Minimum Cost for Cutting Cake II - There is an m x n cake that needs to be cut into 1 x 1 pieces. Task is to cut the paper into squares of any size. 1. Return the number of square-free non-empty subsets of the array nums Can you solve this real interview question? Magic Squares In Grid - A 3 x 3 magic square is a 3 x 3 grid filled with distinct numbers from 1 to 9 such that each row, column, and both diagonals all have the same sum. In how many distinct ways can you climb to the top? Example 1: Input: n = 2 Output: 2 Explanation: There are two ways to climb to the top. 66M subscribers Subscribed LeetCode solutions in any programming language Can you solve this real interview question? Minimum Sum of Squared Difference - You are given two positive 0-indexed integer arrays nums1 and nums2, both of length n. , grid[m - 1][n - 1]). gxvame ic9qzfk uxqiub sxfcbk ptd zd mbyp6 zmmbm yhffk av8k