What is algorithm for finding factorial??

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Social Science_PhD_NET

Factorial of a number is multiplying the numbers from 1,2,3...n where n is the number whose factorial is to be found out. There are two methods called recursive and iterative.In recursive method program calls the factorial function again and again until the terminal condition is reached. In the iterative...
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Factorial of a number is multiplying the numbers from 1,2,3...n where n is the number whose factorial is to be found out. There are two methods called recursive and iterative.In recursive method program calls the factorial function again and again until the terminal condition is reached. In the iterative program it keeps on multiplying the next number with the factorial calculated till now until it reaches the number for which factorial is to be calculated. Input An integer. Output Factorial of given number. complexity O(n) Factorial(num) 1 if (num=0 or num=1) then 2 fact = 1; 3 else 4 for i 1 to n 5 fact=fact*i; 6 print fact read less
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Freelancer & Educator, Language , Vedic Maths, Humanities

Algorithm for calculate factorial value of a number: step 1. Start step 2. Read the number n step 3. i=1, fact=1 step 4. Repeat step 4 through 6 until i=n step 5. fact=fact*i step 6. i=i+1 step 7. Print fact step 8. Stop
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Algorithm for calculate factorial value of a number: [algorithm to calculate the factorial of a number] step 1. Start step 2. Read the number n step 3. [Initialize] i=1, fact=1 step 4. Repeat step 4 through 6 until i=n step 5. fact=fact*i step 6. i=i+1 step 7. Print fact step 8. Stop [process finish of calculate the factorial value of a number] read less
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Education Providor with entreprenural efforts, Professional Coach, Quant Coach, Math Guru and Skills in applied IT and Managerial Information Systems

The Answer to the questions is different for a C programming or VB programming learner and an Analyst. The Recursive Algorithm is a high school or Introductory College algorithm. Typically efficient for small numbers say up to 10^5 or 6. For larger numbers these loops, the counter and how the language...
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The Answer to the questions is different for a C programming or VB programming learner and an Analyst. The Recursive Algorithm is a high school or Introductory College algorithm. Typically efficient for small numbers say up to 10^5 or 6. For larger numbers these loops, the counter and how the language implements them get slow and limited, depending on processor speed. One might even just get constrained at the memory size of the integer where they are implemented. Enter Custom BigInteger Data type and smart ways to operate (Multiply) on them like Fast Fourrier Type Multiplications. Already into numerical methods, then Factorials get interesting. Why Factorials? Off course... we are talking of probability distributions at some point or combinatoriacs which in some form depend on this complex operation. I would then suggest you to have a look at approximation of T. J. Stieltjes based on Stirling Approximation, Swing Method and so on. Work well on moderately large numbers like 10^6 or 10^50. Most compilers implement log lookup function quite well, but Id suggest you to take count of the algorithm or lookup function (Stochastic Find or Sort) you are using. One thing you'd take back is a closer look at algebra as well as smarter ways to find patterns and make calculations. The world of algorithms depend on two dimensions speed and precision, and to find precise numbers when exact computation is impractical or too time consuming is interesting in itself. read less
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Education Providor with entreprenural efforts, Professional Coach, Quant Coach, Math Guru and Skills in applied IT and Managerial Information Systems

For a headstart on Stieljets algorithm and its practicality, google Approximation Formulas for the Factorial Function n! by Peter Luschny
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Dealing with Statistics, SPSS, MATLAB, LATEX, R.

fact=1; for (i=2;i<=n;i++) { fact=fact*i; } print fact;
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Maths & Computer Tution

step 1. Start step 2. Read the number n step 3. i=1, fact=1 step 4. Repeat step 4 through 6 until i=n step 5. fact=fact*i step 6. i=i+1 step 7. Print fact step 8. Stop
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Math cracker

Input An integer. Output Factorial of given number. complexity O(n) Factorial(num) 1 if (num=0 or num=1) then 2 fact = 1; 3 else 4 for i 1 to n 5 fact=fact*i; 6 print fact
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