How to resolve the algorithm Multiplication tables step by step in the J programming language

Published on 12 May 2024 09:40 PM
#J

How to resolve the algorithm Multiplication tables step by step in the J programming language

Table of Contents

Problem Statement

Produce a formatted   12×12   multiplication table of the kind memorized by rote when in primary (or elementary) school.

Only print the top half triangle of products.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Multiplication tables step by step in the J programming language

Source code in the j programming language

   multtable=: <:/~ * */~
   format=: 'b4.0' 8!:2 ]
   (('*' ; ,.) ,. ({. ; ])@format@multtable) >:i.12
┌──┬────────────────────────────────────────────────┐
│* │   1   2   3   4   5   6   7   8   9  10  11  12│
├──┼────────────────────────────────────────────────┤
│ 1│   1   2   3   4   5   6   7   8   9  10  11  12│
│ 2│       4   6   8  10  12  14  16  18  20  22  24│
│ 3│           9  12  15  18  21  24  27  30  33  36│
│ 4│              16  20  24  28  32  36  40  44  48│
│ 5│                  25  30  35  40  45  50  55  60│
│ 6│                      36  42  48  54  60  66  72│
│ 7│                          49  56  63  70  77  84│
│ 8│                              64  72  80  88  96│
│ 9│                                  81  90  99 108│
│10│                                     100 110 120│
│11│                                         121 132│
│12│                                             144│
└──┴────────────────────────────────────────────────┘

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