CTF Challenges by Category
All Skills
⭐
algorithms × 166
⭐
linux × 159
⭐
arrays × 117
💪
syntax × 114
💪
variables × 97
💪
c-programming × 94
💪
process-management × 90
⭐
data-structure × 85
💪
go × 82
💪
python × 79
💪
control-flow × 79
💻
simulation × 79
⭐
loops × 73
⭐
array × 69
⭐
data-structures × 68
💻
optimization × 67
💪
data-types × 66
💪
pointers × 63
💪
functions × 56
⭐
sorting × 54
💪
operators × 52
⭐
basics × 39
⭐
php × 37
💪
signals × 36
💪
c × 34
💪
cli × 33
⭐
iteration × 32
💪
memory × 29
⭐
stack × 29
💻
subarray × 28
⭐
stacks × 27
💪
monitoring × 26
⭐
queues × 24
💻
greedy × 24
💪
control-flow-structures × 23
💪
package-management × 23
⭐
lists × 23
⭐
scheduling × 23
💻
sliding-window × 23
💪
keywords × 21
💪
operations × 21
💪
php-programming × 21
💪
concurrency × 21
💪
io × 20
⭐
programming × 20
⭐
queue × 20
💻
dynamic-programming × 20
💻
filtering × 20
💪
python-programming × 19
⭐
list × 19
💪
standard-library × 18
💪
output × 18
⭐
strings × 18
💪
semantics × 17
💪
javascript × 17
⭐
traversal × 16
💪
operating-systems × 16
💪
socket-programming × 16
💪
procfs × 15
💪
slices × 15
💪
web-development × 15
💻
frequency × 15
💻
sequence × 15
💪
packages × 14
💪
conditional-statements × 14
💪
conditionals × 14
💪
memory-management × 14
💪
shell × 14
💻
merging × 14
💪
ps × 13
💪
comments × 13
💪
channels × 13
💪
zero-value × 13
⭐
sql × 13
⭐
basic × 13
💻
prefix-sum × 13
💪
priority × 12
💪
goroutines × 12
💪
unicode × 12
💪
while-loop × 12
💪
mongodb × 12
💪
declaration × 12
💪
control-structures × 12
💪
c++ × 12
💪
constants × 12
💪
types × 12
⭐
indexing × 12
💻
dfs × 12
💻
graph × 12
💪
linked-list × 11
💪
performance × 11
💪
fifo × 11
💪
database × 11
💪
job-control × 11
💪
for-loop × 11
⭐
implementation × 11
💻
unique × 11
💻
math × 11
💪
switch × 10
💪
java × 10
💪
debian × 10
⭐
scripting × 10
💻
bst × 10
💻
string-manipulation × 10
⭐
web × 9
💪
break-statement × 9
💪
input-output-redirection × 9
💪
file-management × 9
💪
complexity × 9
💪
ubuntu × 9
💪
pointer-arithmetic × 9
💪
navigation × 9
💪
commands × 9
⭐
string × 9
⭐
query × 9
⭐
graphs × 9
⭐
ordering × 9
💻
data-processing × 9
💻
hashing × 9
💻
merge × 9
💻
classes × 9
💻
union-find × 9
💪
c-language × 8
💪
continue-statement × 8
💪
dereference × 8
💪
system-monitoring × 8
💪
lifo × 8
💪
error-handling × 8
💪
boolean × 8
⭐
function × 8
⭐
comparison × 8
⭐
heap × 8
💻
array-manipulation × 8
💻
logic × 8
💻
interview-preparation × 8
💻
code-optimization × 8
💪
switch-case × 7
💪
return-values × 7
💪
built-ins × 7
💪
if-else × 7
💪
fundamentals × 7
💪
crud × 7
💪
branching × 7
💪
methods × 7
💪
time-complexity × 7
💪
system-monitoring-tools × 7
💪
zero-values × 7
💪
debugging × 7
💪
sql-programming × 7
⭐
arithmetic × 7
⭐
bfs × 7
💻
partitioning × 7
💻
subsequence × 7
💻
dp × 7
💻
algorithm × 7
💻
inheritance × 7
💻
two-pointer × 7
💪
visibility × 6
💪
real-world × 6
💪
switch-statement × 6
💪
update × 6
💪
type-inference × 6
💪
interfaces × 6
💪
decision-making × 6
💪
file-commands × 6
💪
null × 6
💪
variable-declaration × 6
💪
null-pointer × 6
💪
goroutine × 6
💪
beginner × 6
💪
if-statement × 6
💪
database-management × 6
💪
tcp × 6
💪
memory-allocation × 6
💪
imports × 6
💪
variadic × 6
💪
type-casting × 6
💪
linked-lists × 6
⭐
recursion × 6
⭐
search × 6
⭐
hash-table × 6
💻
list-manipulation × 6
💻
object-oriented-programming × 6
💻
sum × 6
💻
binary-tree × 6
💻
resource-management × 6
💻
brute-force × 6
💻
list-processing × 6
💻
alternating × 6
💻
compression × 6
💻
rotation × 6
💻
intervals × 6
💻
grouping × 6
💪
structs × 5
💪
process-control × 5
💪
file-system × 5
💪
break × 5
💪
io-redirection × 5
💪
listening × 5
💪
fedora × 5
💪
booleans × 5
💪
dpkg × 5
💪
naming × 5
💪
computer-networks × 5
💪
binding × 5
💪
identifiers × 5
💪
arch-linux × 5
💪
sql-syntax × 5
💪
infinite-loop × 5
💪
file-creation × 5
💪
loop × 5
⭐
analysis × 5
💻
priority-queue × 5
💻
calculation × 5
💻
validation × 5
💻
object-oriented × 5
💻
prime × 5
💻
temperature × 5
💻
oop × 5
💻
cycle-detection × 5
💻
primes × 5
💻
reordering × 5
💪
unix × 4
💪
data-manipulation × 4
💪
dereferencing × 4
💪
conversion × 4
💪
do-while × 4
💪
listing × 4
💪
basic-commands × 4
💪
introspection × 4
💪
bash × 4
💪
immutability × 4
💪
jobs × 4
💪
network-programming × 4
💪
apt × 4
💪
memory-address × 4
💪
memory-usage × 4
💪
output-redirection × 4
💪
arraylist × 4
💪
dynamic-memory × 4
💪
concepts × 4
💪
apt-get × 4
💪
circular-queue × 4
💪
inspection × 4
💪
peek × 4
💪
crud-operations × 4
💪
runtime × 4
💪
type-conversion × 4
💪
data-retrieval × 4
💪
literals × 4
💪
session-management × 4
💪
assignment × 4
💪
integer × 4
💪
network-topologies × 4
💻
divisibility × 4
💻
aggregation × 4
💻
deque × 4
💻
counting × 4
💻
tree × 4
💻
string-processing × 4
💻
greedy-algorithm × 4
💻
range-sum × 4
💻
combinatorics × 4
💻
stability × 4
💻
average × 4
💻
sensor × 4
💻
binary-search × 4
💻
set × 4
💻
order-preservation × 4
💻
two-pointers × 4
💻
hash-map × 4
💻
design × 4
💻
bruteforce × 4
💻
hashmap × 4
💻
filter × 4
💪
http × 3
💪
disk-usage × 3
💪
architecture × 3
💪
hidden-files × 3
💪
aliases × 3
💪
go-syntax × 3
💪
loop-control × 3
💪
sync × 3
💪
declarations × 3
💪
numbers × 3
💪
modules × 3
💪
concatenation × 3
💪
defaults × 3
💪
pipes × 3
💪
basic-syntax × 3
💪
float × 3
💪
system-info × 3
💪
blocking × 3
💪
memory-layout × 3
💪
applications × 3
💪
stderr × 3
💪
delete × 3
💪
delete-operation × 3
💪
background-process × 3
💪
update-operation × 3
💪
top × 3
💪
api × 3
💪
superglobals × 3
💪
for-loops × 3
💪
scope × 3
💪
yum × 3
💪
sql-commands × 3
💪
insert × 3
💪
data-transmission × 3
💪
anonymous-functions × 3
💪
command-line × 3
💪
cybersecurity × 3
💪
go-programming × 3
💪
stdout × 3
💪
function-definition × 3
💪
pointers-in-c × 3
💪
built-in-functions × 3
💪
analogy × 3
💪
comparison-operators × 3
💪
html × 3
💪
synchronisation × 3
💪
stdlib × 3
💪
data-insertion × 3
💪
file-operations × 3
💪
system-calls × 3
💻
sequential × 3
💻
interleaving × 3
💻
dynamic × 3
💻
caching × 3
💻
pathfinding × 3
💻
traffic-light × 3
💻
movement × 3
💻
order × 3
💻
iot × 3
💻
parity × 3
💻
stable-sort × 3
💻
equilibrium × 3
💻
palindrome × 3
💻
bit-manipulation × 3
💻
queries × 3
💻
sequences × 3
💻
partition × 3
💻
digit-sum × 3
💻
sensors × 3
💻
mathematics × 3
💻
cumulative × 3
💻
sums × 3
💻
connectivity × 3
💻
modular-arithmetic × 3
💻
linkedlist × 3
💪
sizeof × 2
💪
pass-statement × 2
💪
sql-queries × 2
💪
zero-based × 2
💪
process × 2
💪
do-while-loop × 2
💪
cli-tools × 2
💪
conditional × 2
💪
process-tree × 2
💪
vpn × 2
💪
generics × 2
💪
network-monitoring × 2
💪
selection × 2
💪
access × 2
💪
file-io × 2
💪
placeholders × 2
💪
characters × 2
💪
labels × 2
💪
append × 2
💪
networking × 2
💪
if-statements × 2
💪
terminal × 2
💪
disk-space × 2
💪
ps-command × 2
💪
scheduler × 2
💪
dynamic-array × 2
💪
underflow × 2
💪
looping-structures × 2
💪
return-types × 2
💪
binary-heap × 2
💪
string-concatenation × 2
💪
toolchain × 2
💪
list-files × 2
💪
directory-management × 2
💪
collections × 2
💪
use-case × 2
💪
pid × 2
💪
conceptual × 2
💪
mutability × 2
💪
programming-language × 2
💪
listen-function × 2
💪
data-filter × 2
💪
init-process × 2
💪
visualisation × 2
💪
blank-identifier × 2
💪
beginners × 2
💪
kernel × 2
💪
composer × 2
💪
standard-error × 2
💪
where-clause × 2
💪
space-complexity × 2
💪
basic-sql × 2
💪
file-move × 2
💪
directory-commands × 2
💪
conditional-statement × 2
💪
real-life × 2
💪
general-knowledge × 2
💪
floating-point × 2
💪
centos × 2
💪
nice × 2
💪
priorities × 2
💪
logical × 2
💪
if-else-statement × 2
💪
directory-creation × 2
💪
formatting × 2
💪
sql-basic × 2
💪
http-methods × 2
💪
visualization × 2
💪
redhat × 2
💪
table-modification × 2
💪
http-status-codes × 2
💪
rune × 2
💪
api-design × 2
💪
socket × 2
💪
select-statement × 2
💪
conditions × 2
💪
big-o × 2
💪
file-redirection × 2
💪
printing × 2
💪
arithmetic-operations × 2
💪
background-jobs × 2
💪
function-pointers × 2
💪
tcp-server × 2
💪
update-command × 2
💪
closures × 2
💪
socket-function × 2
💪
nil × 2
💪
nested-loops × 2
💪
builtins × 2
💪
input-redirection × 2
💪
indices × 2
💪
data-extraction × 2
💪
buffering × 2
💪
programming-languages × 2
💪
php-syntax × 2
💪
compilation × 2
💪
bind-function × 2
💪
c-pointers × 2
💪
css × 2
💪
composition × 2
💪
bind × 2
💪
read-operation × 2
💪
differences × 2
💪
error-redirection × 2
💪
sql-command × 2
💪
slicing × 2
💪
statements × 2
💪
multiple-returns × 2
💪
type-system × 2
💪
continue × 2
💪
range × 2
💪
deletion × 2
💪
c-standard-library × 2
💪
json × 2
💪
properties × 2
💪
if-condition × 2
💪
directories × 2
💪
parameters × 2
💪
generic-programming × 2
💪
easy × 2
💪
type-juggling × 2
💪
directory-navigation × 2
💪
insert-operation × 2
💪
tools × 2
💪
timing × 2
💪
cleanup × 2
💪
creation × 2
💪
do-while-loops × 2
💪
processes × 2
💪
errors × 2
💪
casting × 2
💪
linux-commands × 2
💪
kill-command × 2
💪
red-hat × 2
💪
slice × 2
💪
inference × 2
💪
cyber-security × 2
💪
rest × 2
💪
c# × 2
💪
exception-handling × 2
💪
if-elif-else × 2
💻
inventory × 2
💻
level-order × 2
💻
deduplication × 2
💻
linear-probing × 2
💻
tree-traversal × 2
💻
coin-change × 2
💻
queue-simulation × 2
💻
even × 2
💻
increasing × 2
💻
min-stack × 2
💻
resource-allocation × 2
💻
alternation × 2
💻
pair-sum × 2
💻
data-stream × 2
💻
strategy × 2
💻
efficiency × 2
💻
number-theory × 2
💻
evaluation × 2
💻
components × 2
💻
segments × 2
💻
interview × 2
💻
accumulation × 2
💻
subarrays × 2
💻
time-management × 2
💻
cyclic × 2
💻
data-filtering × 2
💻
directed-graph × 2
💻
memoization × 2
💻
list-operations × 2
💻
circular-buffer × 2
💻
graph-traversal × 2
💻
class-design × 2
💻
state-machine × 2
💻
energy × 2
💻
encoding × 2
💻
grid × 2
💻
pair-finding × 2
💻
prime-numbers × 2
💻
uniqueness × 2
💻
cryptography × 2
💻
backtracking × 2
💻
verification × 2
💻
binary-search-tree × 2
💻
dictionary × 2
💻
range-query × 2
💻
data-analysis × 2
💻
sensor-data × 2
💻
inorder-traversal × 2
💻
graph-connectivity × 2
💻
disjoint-set × 2
💻
transactions × 2
💻
pricing × 2
💻
zigzag × 2
💻
contiguous × 2
💻
budgeting × 2
💻
rpn × 2
💻
graph-cycle × 2