[Verse 1] Functions calling functions in a tower made of glass Each invocation stacking frames that multiply too fast The heap gets hungry, memory screams, your program starts to crash When recursive algorithms exceed their welcome pass Stack overflow exception thrown, your tower turns to ash [Chorus] Count your depth before you leap Tail calls keep the stack heap cheap Convert loops when calls run steep Memory bounded, promises we keep Stack frames shallow, never deep Iterative solutions while you sleep [Verse 2] Transform that recursive beast into a looping knight Push your state onto a structure, track each breadcrumb bite Custom stack controls the game, no system limits tight Base case becomes your exit flag, termination bright Manual memory, your command, recursive done right [Chorus] Count your depth before you leap Tail calls keep the stack heap cheap Convert loops when calls run steep Memory bounded, promises we keep Stack frames shallow, never deep Iterative solutions while you sleep [Bridge] Fibonacci with a simple loop Factorial without the scoop Tree traversal, queue and stack Never worry, never lack Space complexity under attack Predictable patterns, stay on track [Verse 3] Explicit stacks with push and pop replace the hidden cost Node by node you process data, nothing ever lost Simulation of recursion but the overhead is tossed Memory usage calculated, boundaries never crossed Stack management mastery, no performance ever lost [Chorus] Count your depth before you leap Tail calls keep the stack heap cheap Convert loops when calls run steep Memory bounded, promises we keep Stack frames shallow, never deep Iterative solutions while you sleep [Outro] When the call stack threatens war Build your own and be sure Iteration opens every door Memory safe forevermore
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