The following are programs I wrote when I was a student. I'll add more of the programs I wrote when I was a student gradually. Discrete Mathematics/Structures, Number Theory and Numerical Analysis Group I (JavaScript Interactive Programs) The above are handy javascript programs to perform long division of polynomials, to find the greatest common divisor and write it as a linear combination of the numbers, find the least common multiple, find the canonical factorization of a positive integer (write it as a product of primes), find the quotient and the remainder, determine if a number is prime, solve linear and quadratic congruence systems (in Zn), determine if two integers are relatively prime, find the inverse in Zn, find Lagrange polynomial interpolation, Newton polynomial interpolation , natural cubic splines interpolation, clamped cubic splines interpolation, LU factorization, Cholesky factorization, solve a linear system by the Jacobi method or Gauss-Seidel method. Data Structures Sorting (C++ Programs) Trees (C++ Programs) Linked Lists (C++ Programs) Graphs (C++ Programs) Queues (C++ Programs) Numerical Analysis, Linear Algebra and Numerical Linear Algebra Group 1 (Octave Programs; Octave is similar to MATLAB) Group 2 (MATLAB Programs) Coding Theory Group 1 Pattern Recognition Group I (C++ Programs) Others Program 1 (Pascal Flight Reservation Program) Some common unix commnads.