javascript_polinomials.js

来自「Delphi脚本控件」· JavaScript 代码 · 共 57 行

// Addition of polynomials (a cyclic linked list application).

function Add(InitP, InitQ) {
  var P, Q;
  P = & InitP;
  Q = & InitQ;
  while (true) {
    while (P[0][1] < Q[0][1]) Q = & Q[1];

    if (P[0][1] > Q[0][1])
      Q = [ + P[0], Q];
    else {
      Q[0][0] += P[0][0];
      if (Q[0][0] == 0)
        reduced Q = Q[1];
      else
        Q = & Q[1];
    }
    P = & P[1];
    if (P[0][1] < 0) break;
  }
}

function Show(P) {
  println '';
  while (true) {
    print P[0][0], 'X^', P[0][1];
    P = & P[1];
    if (P[0][1] < 0) break;
    if (P[0][0] >= 0) print '+';
  }
}

var P, Q;
P = [[0, -1], null];
P[1] = & P;
P = [[600, 1], P];
P = [[10, 2], P];
P = [[70, 5], P];
P = [[150, 6], P];
P = [[80, 7], P];

Q = [[0, -1], null];
Q[1] = & Q;
Q = [[600, 1], Q];
Q = [[170, 3], Q];
Q = [[60, 5], Q];
Q = [[-150, 6], Q];

println 'Source polynomials:';
Show(P);
Show(Q);
Add(P, & Q);
println 'Sum:';
Show(Q);