# Problems

1 – 50 of 275
 Problem Title Likes Solvers Difficulty

#### Problem 1686. Generate a melodic contour string matrix

Created by: Ned Gulley

Tags strings, music

4

45

#### Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

2

18

#### Problem 1286. MatCAT - Reconstruct X from Its X-rays

Created by: Ned Gulley

Tags matrices

9

88

#### Problem 44486. Vector push

Created by: Shaul Salomon

Tags vector, 22105

2

374

#### Problem 520. Choose the best fitting dominoes

Created by: Doug Hull

3

198

#### Problem 375. N-Dimensional Array Slice

Created by: @bmtran (Bryant Tran)

Tags indexing

11

171

#### Problem 43. Subset Sum

Created by: Cody Team

Tags matlab

24

1475

#### Problem 8054. Stress-Strain Properties - 7

Created by: goc3

Tags test, stress, strain

1

53

#### Problem 52911. Easy Sequences 41: Boxes with Integer Edges

Created by: Ramon Villamangca

1

4

#### Problem 54720. Hyperperfect Numbers

Created by: Dyuman Joshi

1

4

#### Problem 54750. Find the length of stream affected by a spill

Created by: ChrisR

2

4

#### Problem 55315. Chain multiplication - 04

Created by: Asif Newaz

2

4

#### Problem 55370. Easy Sequences 69: Radix Economy of Factorials

Created by: Ramon Villamangca

1

4

#### Problem 1187. Knave in the middle attack

Created by: Alfonso Nieto-Castanon

2

14

#### Problem 2643. Find out base of following arithmetic operation

Created by: Pritesh Shah

Tags numbers

4

12

Created by: HH

Tags numbers

2

24

#### Problem 2309. Calculate the Damerau-Levenshtein distance between two strings.

Created by: Jan Orwat

1

22

#### Problem 45426. The Tortoise and the Hare - 02

Created by: Asif Newaz

Tags algorithm

1

6

#### Problem 44088. '5*3' copy character 3 - five times

Created by: Mehmet OZC

4

16

#### Problem 44374. Tautology

Created by: Jan Orwat

3

41

#### Problem 46579. Shape Shifter - Part 1

Created by: Highphi

Tags game, matrix, puzzle

2

5

#### Problem 1092. Decimation

Created by: James

17

193

#### Problem 44080. Construct a "diagAdiag" matrix

Created by: Vinod Kumar Singla

1

51

#### Problem 733. Extract Built In Functions and Toolbox Functions from String or Function Handle

Created by: Richard Zapor

4

65

#### Problem 2674. Generalised Hamming Number

Created by: Jean-Marie Sainthillier

Tags hamming

10

259

#### Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

2

107

#### Problem 8057. (Linear) Recurrence Equations - Generalised Fibonacci-like sequences

Created by: Jan Orwat

13

251

#### Problem 44457. Triangle of numbers

Created by: Shaul Salomon

4

304

#### Problem 1826. Find vampire numbers

Created by: Andrew Newell

11

282

#### Problem 52574. Easy Sequences 8: Triangles with integer sides and prime perimeters

Created by: Ramon Villamangca

1

7

#### Problem 52644. List modest numbers up to n

Created by: ChrisR

4

7

#### Problem 3060. Scrabble Scores - 8

Created by: goc3

Tags game, board, word

3

20

#### Problem 1891. High Precision Square Root (Inspired by Project Euler 80)

Created by: James

2

23

#### Problem 96. Knight's Tour Checker

Created by: Cody Team

Tags matlab, chess

23

1028

#### Problem 88. It dseon't mettar waht oedrr the lrettes in a wrod are.

Created by: Cody Team

Tags regexp, strings

16

1233

Created by: Tim

2

31

#### Problem 84. Longest Divisor Run

Created by: Cody Team

Tags matlab

6

951

#### Problem 713. Find the maximum number of decimal places in a set of numbers

Created by: Vincent

50

1921

#### Problem 71. Read a column of numbers and interpolate missing data

Created by: Cody Team

20

1866

#### Problem 68. Kaprekar Steps

Created by: Cody Team

25

1758

#### Problem 52844. Easy Sequences 42: Areas of Non-constructible Polygons

Created by: Ramon Villamangca

0

3

#### Problem 52973. Easy Sequences 45: Second Derivative of Inverse Polynomial Function

Created by: Ramon Villamangca

1

4

#### Problem 53119. Easy Sequences 53: Greatest Proper Divisor

Created by: Ramon Villamangca

3

3

#### Problem 53735. Easy Sequences 58: Curious Prime-Rational Functions

Created by: Ramon Villamangca

0

3

#### Problem 53980. Determine whether a player solved a Cody problem

Created by: ChrisR

2

3

#### Problem 54035. Matrix Rotation

Created by: Dyuman Joshi

2

5

#### Problem 54280. N-th Digit of all Write-Down Numbers

Created by: David Hill

1

3

Created by: CXD

Tags numbers

1

3

#### Problem 55305. Chain multiplication - 02

Created by: Asif Newaz

1

6

#### Problem 56368. Find a subset that divides the vector into equal halves --- HARD MODE

Created by: Christian Schröder

Tags vectors

0

3

1 – 50 of 275