How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the SNOBOL4 programming language
Published on 12 May 2024 09:40 PM
How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the SNOBOL4 programming language
Table of Contents
Problem Statement
Demonstrate how to strip leading and trailing whitespace from a string. The solution should demonstrate how to achieve the following three results:
For the purposes of this task whitespace includes non printable characters such as the space character, the tab character, and other such characters that have no corresponding graphical representation.
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Strip whitespace from a string/Top and tail step by step in the SNOBOL4 programming language
Source code in the snobol4 programming language
s1 = s2 = " Hello, people of earth! "
s2 = CHAR(3) s2 CHAR(134)
&ALPHABET TAB(33) . prechars
&ALPHABET POS(127) RTAB(0) . postchars
stripchars = " " prechars postchars
* TRIM() removes final spaces and tabs:
OUTPUT = "Original: >" s1 "<"
OUTPUT = "With trim() >" REVERSE(TRIM(REVERSE(TRIM(s1)))) "<"
* Remove all non-printing characters:
OUTPUT = "Original: >" s2 "<"
s1 POS(0) SPAN(stripchars) =
OUTPUT = "Leading: >" s1 "<"
s2 ARB . s2 SPAN(stripchars) RPOS(0)
OUTPUT = "Trailing: >" s2 "<"
s2 POS(0) SPAN(stripchars) =
OUTPUT = "Full trim: >" s2 "<"
END
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