Monday, 20 December 2010

Algorithm to implement the Lagrange interpolation

Algorithm:

Step 1. Read x,n

Step2. for i=1 to (n+1) is steps of 1 do Read xi,fi end for {the above statements reads x,s and the corresponding values of f is }

Step 3. Sum=0

Step 4. for i=1 to (n+1) in steps of 1 do
Step 5. Profvnc=1
Step 6. for J=1 to (n+1) in steps of 1 do

Step 7. If (j≠i) then prodfunc=prodfunc X(x-xj) / (xi-xj) endfor
 Step 8. Sum=Sum+fi x Prodfunc {sum is the value of f at x} end for
 Step 9. Write x, sum
Step 10. STOP



Data structures using Java

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