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101 – 150 of 1,971

Problem 60221. Battery Charge Indicator

Created by: minnolina

Tags easy

2

Solutions

22

Size

2

Solutions

22

Size

Problem 60201. Find the largest sum of any contiguous subarray

Created by: minnolina

Tags easy, kadane

1

Solution

37

Size

1

Solution

37

Size

Problem 60186. Remove Unique Elements

Created by: minnolina

Tags easy

1

Solution

26

Size

1

Solution

26

Size

Problem 60171. Compute the Ramanujan tau function for large numbers

Created by: David Hill

Tags ramanujan, tau

3

Solutions

248

Size

3

Solutions

248

Size

Problem 59981. Compute the Ramanujan tau function

Created by: ChrisR

Tags number theory, sequence, special functions

1

Solution

58

Size

1

Solution

58

Size

Problem 60166. Recursive triangle area

Created by: Andrew

Tags geometry, triangle, area

1

Solution

32

Size

1

Solution

32

Size

Problem 59871. List the segmented numbers

Created by: ChrisR

Tags number theory, cumsum, sequence

1

Solution

85

Size

1

Solution

85

Size

Problem 59856. Calculate the Area of the Ring

Created by: Abdelrahman Adel

Tags geometry, area, circle

1

Solution

13

Size

1

Solution

13

Size

Problem 59861. List the ways to write 1/n as the sum of two unit fractions

Created by: ChrisR

Tags number theory

1

Solution

30

Size

1

Solution

30

Size

Problem 59831. Palindrome Checker

Created by: Rajiv

Tags palindrome checker

1

Solution

28

Size

1

Solution

28

Size

Problem 59721. finding vector pair with min angle between them

Created by: dareen

Tags matrix, for, loops

1

Solution

51

Size

1

Solution

51

Size

Problem 59841. Count the ways to write 1/n as the sum of two unit fractions

Created by: ChrisR

Tags number theory, sequence, divisors

1

Solution

18

Size

1

Solution

18

Size

Problem 59791. Complete a geometric sequence

Created by: ChrisR

Tags sort, sequence

1

Solution

29

Size

1

Solution

29

Size

Problem 59786. Missing Number (arithmetic progression)

Created by: minnolina

Tags basic, easy

1

Solution

25

Size

1

Solution

25

Size

Problem 59836. Determine whether a number is a Gaussian prime

Created by: ChrisR

Tags primes, mod, complex

1

Solution

51

Size

1

Solution

51

Size

Problem 59701. Express numbers as the sum of a prime, a square, and a cube

Created by: ChrisR

Tags primes, puzzle, partitions

1

Solution

60

Size

1

Solution

60

Size

Problem 59691. Find the minimum element coprime to the rest in a set of 10 consecutive integers

Created by: ChrisR

Tags number theory, gcd, sequence

1

Solution

44

Size

1

Solution

44

Size

Problem 59696. Solve an ODE: Ekman spiral on a solid surface

Created by: ChrisR

Tags fluid mechanics, ordinary differential equation

1

Solution

65

Size

1

Solution

65

Size

Problem 1018. Array GCD

Created by: AMITAVA BISWAS

Tags gcd

1

Solution

19

Size

1

Solution

19

Size

Problem 59658. Update course numbers and abbreviations

Created by: ChrisR

Tags strings

1

Solution

117

Size

1

Solution

117

Size

Problem 2145. Find the index of n in magic(n)

Created by: Koteswar Rao Jerripothula

Tags magic, matrix

1

Solution

22

Size

1

Solution

22

Size

Problem 59492. Quasi-Carmichael Numbers

Created by: David Hill

Tags quasi-carmichael numbers

1

Solution

96

Size

1

Solution

96

Size

Problem 59459. Carmichael Function

Created by: David Hill

Tags carmichael

1

Solution

60

Size

1

Solution

60

Size

Problem 59621. Beam me up, Scotty!

Created by: Dyuman Joshi

Tags vectors, sum, vectorization

1

Solution

37

Size

1

Solution

37

Size

Problem 59541. Compute the polylogarithm for real arguments

Created by: ChrisR

Tags integral, special functions, gamma

2

Solutions

128

Size

2

Solutions

128

Size

Problem 59586. List ways to make a sum in Killer Sudoku

Created by: ChrisR

Tags puzzle, partition

2

Solutions

40

Size

2

Solutions

40

Size

Problem 59571. Compute a sum involving the zeta function

Created by: ChrisR

Tags sum, special functions, maths 505

1

Solution

16

Size

1

Solution

16

Size

Problem 59531. Create rectangular function.

Created by: Markus Müller

Tags rectangular function

1

Solution

21

Size

1

Solution

21

Size

Problem 59526. Count paths between corners of a grid that remain on or below the diagonal

Created by: ChrisR

Tags sequence, lattice

1

Solution

207

Size

1

Solution

207

Size

Problem 59516. Determine aquifer properties: slug test

Created by: ChrisR

Tags fit, groundwater

1

Solution

149

Size

1

Solution

149

Size

Problem 59521. Integrate a power tower

Created by: ChrisR

Tags integral, special functions, maths 505

2

Solutions

151

Size

2

Solutions

151

Size

Problem 59511. Count the ones in a divisibility matrix

Created by: ChrisR

Tags sum, divisor, redheffer

1

Solution

21

Size

1

Solution

21

Size

Problem 59506. Compute the determinant of a divisibility matrix

Created by: ChrisR

Tags determinant, mobius, redheffer

1

Solution

64

Size

1

Solution

64

Size

Problem 59501. Compute the sum of distances from a point to the sides of an equilateral triangle

Created by: ChrisR

Tags geometry, trigonometry, hypot

1

Solution

21

Size

1

Solution

21

Size

Problem 59249. Compute the total length of lines between all vertices of a regular polygon

Created by: ChrisR

Tags geometry, trigonometry, dr. barker

1

Solution

40

Size

1

Solution

40

Size

Problem 2022. Find a Pythagorean triple

Created by: Tanya Morton

Tags pythagoras

2

Solutions

24

Size

2

Solutions

24

Size

Problem 59237. Roman to Integer Conversion

Created by: Shubham Shubham

Tags numbers, conversion, romannumerals

1

Solution

35

Size

1

Solution

35

Size

Problem 59244. nxn matrix with elements from 1:n^2

Created by: Josh

Tags matrices

1

Solution

23

Size

1

Solution

23

Size

Problem 59242. Construct numbers from antidiagonals of stacks of binary numbers

Created by: ChrisR

Tags diag, fliplr, sequence

1

Solution

25

Size

1

Solution

25

Size

Problem 59217. List lunar triangular numbers without duplication

Created by: ChrisR

Tags strings, sequence, lunar arithmetic

1

Solution

32

Size

1

Solution

32

Size

Problem 1632. Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

Created by: Shahid Ali Murtza

Tags sign changes

1

Solution

16

Size

1

Solution

16

Size

Problem 59084. Count integers in randomized vector that are multiples of a given number.

Created by: Ray

Tags math, matrix, basic matlab

1

Solution

15

Size

1

Solution

15

Size

Problem 59202. Bullseye Matrix with Zeros

Created by: Josh

Tags matrices, matrix

1

Solution

34

Size

1

Solution

34

Size

Problem 59170. Determine whether a number is a Zeisel number

Created by: ChrisR

Tags primes, sequence, recurrence

1

Solution

79

Size

1

Solution

79

Size

Problem 59197. Determine if a number is a cool number

Created by: Aryan

Tags numbers

1

Solution

27

Size

1

Solution

27

Size

Problem 58019. Factor a number into Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

1

Solution

49

Size

1

Solution

49

Size

Problem 58018. List the Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

1

Solution

28

Size

1

Solution

28

Size

Problem 59050. Determine whether a number is a Higgs prime

Created by: ChrisR

Tags primes, sequence, subset

1

Solution

55

Size

1

Solution

55

Size

Problem 58977. Find the smallest number leading to a maximal product of two numbers that concatenate to another number

Created by: ChrisR

Tags strings, sequence, noeis

1

Solution

98

Size

1

Solution

98

Size

Problem 58971. Compute the maximal product of any two numbers whose concatenation is n

Created by: ChrisR

Tags strings, sequence

1

Solution

26

Size

1

Solution

26

Size

101 – 150 of 1,971