Sabtu, 15 Oktober 2011

Pengertian Algoritma



   Algorima adalah urutan langkah-langkah logis penyelesaian masalah yang disusun secara sistematis. Algoritma dikatakan benar apabila dapat memecahkan masalah serta perlu dipertimbangkan masalah efisiensi dalam penyusunannya. Agar dapat dilaksanakan oleh komputer, algoritma harus ditulis dalam notasi bahasa pemrograman. Tetapi setiap orang punya pola pikir yang berbeda, karena itu akan menghasilkan algoritma yang berbeda.

Penyajian Algoritma:
a.Natural Language.
b.Flowchart.
c.Pseudo-code.
d.Diagram blok struktur program.
e.Diagram warnier.
f.Tabel keputusan dan pohon keputusan .

Kriteria Algoritma:
a.Input, algoritma dapat memiliki 0 atau lebih inputan dari luar.
b.Output, algoritma harus memiliki 1 buat output keluaran.
c.Definiteness (pasti), algoritma memiliki instruksi yang jelas dan tidak ambigu.
d.Finiteness (batas), algoritma memiliki titik berhenti setiap pernyataan.
e.Effectiveness (tepat dan efisien), algoritma harus dapat dilaksanakan dan efisien.

Jenis proses Algoritma:
a.Sequence Process, instruksi yang dikerjakan berurutan.
b.Selection Process, instruksi yang dikerjakan jika memenuhi kriteria tertentu.
c.Iteration Process, instruksi yang dikerjakan jika memenuhi kondisi tertentu.
d.Concurrent Process, instruksi yang dikerjakan secara bersamaan.

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