How to resolve the algorithm FASTA format step by step in the XPL0 programming language

Published on 12 May 2024 09:40 PM
#Xpl0

How to resolve the algorithm FASTA format step by step in the XPL0 programming language

Table of Contents

Problem Statement

In bioinformatics, long character strings are often encoded in a format called FASTA.
A FASTA file can contain several strings, each identified by a name marked by a > (greater than) character at the beginning of the line.

Write a program that reads a FASTA file such as: Note that a high-quality implementation will not hold the entire file in memory at once; real FASTA files can be multiple gigabytes in size.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm FASTA format step by step in the XPL0 programming language

Source code in the xpl0 programming language

proc Echo;      \Echo line of characters from file to screen
int Ch;
def LF=$0A, EOF=$1A;
[loop   [Ch:= ChIn(3);
        case Ch of
          EOF:  exit;
          LF:   quit
        other ChOut(0, Ch);
        ];
];

int Ch;
[FSet(FOpen("fasta.txt", 0), ^i);
loop    [Ch:= ChIn(3);
        if Ch = ^> then
                [CrLf(0);
                Echo;
                Text(0, ": ");
                ]
        else    ChOut(0, Ch);
        Echo;
        ];
]

You may also check:How to resolve the algorithm Cuban primes step by step in the C# programming language
You may also check:How to resolve the algorithm FASTA format step by step in the Crystal programming language
You may also check:How to resolve the algorithm Generic swap step by step in the Factor programming language
You may also check:How to resolve the algorithm File modification time step by step in the AutoHotkey programming language
You may also check:How to resolve the algorithm Bioinformatics/Sequence mutation step by step in the Ruby programming language