Shell sort : Sort Search « Collections Data Structure « Java






  1. Java
  2. Collections Data Structure
  3. Sort Search

Shell sort

Shell sort
publicclass ShellSort { privatelong[] data; privateint len; public ShellSort(int max) { data = newlong[max]; len = 0; } publicvoid insert(long value){ data[len] = value; len++; } publicvoid display() { System.out.print("Data:"); for (int j = 0; j < len; j++) System.out.print(data[j] + " "); System.out.println(""); } publicvoid shellSort() { int inner, outer; long temp; //find initial value of h int h = 1; while (h <= len / 3) h = h * 3 + 1; // (1, 4, 13, 40, 121, ...) while (h > 0) // decreasing h, until h=1  { // h-sort the file for (outer = h; outer < len; outer++) { temp = data[outer]; inner = outer; // one subpass (eg 0, 4, 8) while (inner > h - 1 && data[inner - h] >= temp) { data[inner] = data[inner - h]; inner -= h; } data[inner] = temp; } h = (h - 1) / 3; // decrease h  } } publicstaticvoid main(String[] args) { int maxSize = 10; ShellSort arr = new ShellSort(maxSize); for (int j = 0; j < maxSize; j++) { long n = (int) (java.lang.Math.random() * 99); arr.insert(n); } arr.display(); arr.shellSort(); arr.display(); } }








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