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Queue (FIFO)
O(1) enqueue/dequeue
→ Enqueue
← Dequeue
↺ Clear
Pseudocode
JS
PY
C++
JAVA
enqueue(val):
arr[rear++] = val
dequeue():
return arr[front++]
Colour Guide
Front (Next to Dequeue)
Rear (Latest Added)
Removing Element
Queue Info
Size
0
Front
–
Rear
–
Step Log
💾 Export
Complexity
Enqueue
O(1)
Dequeue
O(1)
Space
O(n)