# Problems

51 – 100 of 5,197
 Problem Title Likes Solvers Difficulty

#### Problem 843. Hyperspectral Processing: Determine Material Components given a Hyperspectral vector

Created by: Richard Zapor

0

10

#### Problem 861. Memory Map File: Access and Update

Created by: Richard Zapor

1

22

#### Problem 973. Partial pivoting for Gauss Elimination

Created by: Robert Canfield

2

11

#### Problem 52839. Easy Sequences 33: Web Trapped Ant

Created by: Ramon Villamangca

2

10

#### Problem 52854. Poly2mask, drawpolygon or patch

Created by: warnerchang

Tags polygon

1

11

#### Problem 54595. String Logic 18

Created by: Athi

Tags logic, string

0

56

#### Problem 55210. Determine whether one vector is a subset of another

Created by: ChrisR

6

11

#### Problem 50247. Number Puzzle - 047

Created by: Doddy Kastanya

Tags puzzles

0

30

#### Problem 59121. rotation et mise à l'échelle avec des complexes

Created by: Yannis Cuypers

0

11

0

17

#### Problem 59349. Determine ground distance from an aircraft to a DME station

Created by: Michael Byrne

0

13

#### Problem 59409. Determine pressure altitude using field elevation and altimeter setting

Created by: Michael Byrne

0

13

0

20

#### Problem 59551. Range of Values in a Matrix

Created by: Hassaan

0

16

#### Problem 50524. Calculate the structural rank of a 2-by-4 matrix.

Created by: Tesfaye Girma

Tags matrix

0

35

Created by: Ryan

0

9

#### Problem 59736. Counting the occurrences of a digit in a book

Created by: minnolina

Tags basic, easy

0

6

#### Problem 59741. Pivot index

Created by: minnolina

Tags basic, easy

0

6

#### Problem 59751. Merge two integers

Created by: minnolina

Tags basic, easy

1

9

#### Problem 59761. Digits eliminate

Created by: minnolina

Tags basic, easy

0

10

Created by: minnolina

Tags basic, easy

0

7

#### Problem 59781. Available ingredients + recipe -> number of cakes

Created by: minnolina

Tags basic, easy

0

7

#### Problem 59786. Missing Number (arithmetic progression)

Created by: minnolina

Tags basic, easy

0

10

#### Problem 59801. Limiting Element Occurrences

Created by: minnolina

Tags basic, easy

0

5

#### Problem 59816. Sun angle

Created by: minnolina

Tags basic, easy

1

7

#### Problem 59826. Matrix Rotation

Created by: Sumit Pawar

0

10

#### Problem 59876. Out-of-Place Elements Count

Created by: minnolina

Tags easy, sort

0

9

Created by: Ryan

Tags math

0

8

#### Problem 60176. Find the number of diagonals in a n sided polygon.

Created by: Sahil Islam

0

9

#### Problem 51173. Squares inside a square!

Created by: Fatima Abdulla HCT2021

Tags area

0

51

#### Problem 60181. Integer Persistence, Product

Created by: minnolina

Tags easy

1

6

#### Problem 60186. Remove Unique Elements

Created by: minnolina

Tags easy

2

8

#### Problem 60201. Find the largest sum of any contiguous subarray

Created by: minnolina

0

6

#### Problem 60216. Perfect shuffle

Created by: minnolina

1

8

#### Problem 60221. Battery Charge Indicator

Created by: minnolina

Tags easy

1

7

#### Problem 60237. Finding the Most Frequent Letter in a Text

Created by: minnolina

Tags char

0

7

#### Problem 60251. Instructions Following

Created by: minnolina

Tags easy

1

7

#### Problem 60256. Final Stone Weight

Created by: minnolina

Tags easy

1

7

#### Problem 60286. Hofstadter Q sequence

Created by: minnolina

1

7

#### Problem 60296. Maximizing Stock Profit

Created by: minnolina

Tags easy

0

8

#### Problem 60306. Add non-triangular numbers

Created by: ChrisR

0

7

#### Problem 60356. Eleve ao cubo!

Created by: Marcelo

Tags easy, cody

0

11

#### Problem 60416. Secret Message and Acrostic

Created by: minnolina

0

8

#### Problem 60511. ICFP 2024 Programming Contest June 28 thru July 1

Created by: Richard Zapor

Tags contest, icfp, json

0

6

#### Problem 60536. Jigsaw 001: Intro 2x2 square. Pieces 128x128

Created by: Richard Zapor

0

4

#### Problem 52070. Compute the effective conductivity of a heterogeneous aquifer

Created by: ChrisR

1

11

#### Problem 52308. ICFP2021 Hole-In-Wall: Calculate Score

Created by: Richard Zapor

Tags contest, icfp

0

4

Tags %c

1

131

#### Problem 45936. Bit to Gigabyte

Created by: Kerem Kutan

1

126

51 – 100 of 5,197