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<!DOCTYPE html>

<head>

<title>SmallBASIC | SEARCH</title>

</head>

<body>

</div>

<a href="/pages/download.html">Download</a>

<a href="/pages/community.html">Community</a>

<a href="/pages/articles.html">Resources</a>

<a class='active' href="/pages/reference.html">Language Reference</a>

<a href="/pages/guide.html">SmallBASIC Manual</a>

</div>

</nav>

<a target="_github" href="https://github.com/smallbasic/smallbasic.github.io/commits/master/_build/reference/548-data-search.markdown">History</a>

</div>

<h1>SEARCH</h1>

<blockquote>SEARCH A, key, BYREF idx [USE cmpfunc( var1, var2)]</blockquote>

<a href="/pages/reference.html">Reference</a> >

</div>

Scans an array <code>A</code> for the key <code>key</code> and

returns the position <code>idx</code> of the element. If the key is not

found <code>idx</code> contains the value <code>(LBOUND(A)-1)</code>. In

default-base arrays (starting with element zero) <code>-1</code> will be

returned.

The optional compare function <code>cmpfunc</code> takes 2 vars

<code>var1</code> and <code>var2</code>. <code>var1</code> contains the

value of the actuell element and <code>var2</code> is equal to

<code>key</code>. The compare function must return <code>0</code> or

<code>1</code> (<code>false</code> or <code>true</code>). When it

returns <code>1</code>, the search will stop and the current element

position is returned in <code>idx</code>.

<h3 id="example-1-1d-array-of-numbers">Example 1: 1D array of

numbers</h3>

<div class="sourceCode" id="cb1"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb1-3" aria-hidden="true" tabindex="-1"></a>A = [1,9,6,4,5,3,7,8,2] ' 1D array with 9 elements

<a href="#cb1-4" aria-hidden="true" tabindex="-1"></a>SEARCH A, 3, ElementID

<a href="#cb1-5" aria-hidden="true" tabindex="-1"></a>print "Element: "; ElementID ' Output: Element: 6</code></pre></div>

<h3 id="example-2-2d-array-of-numbers">Example 2: 2D array of

numbers</h3>

<div class="sourceCode" id="cb2"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb2-3" aria-hidden="true" tabindex="-1"></a>A = [1,9,6;4,5,3;7,8,2] ' 2D matrix with 3x3 elements

<a href="#cb2-4" aria-hidden="true" tabindex="-1"></a>SEARCH A, 3, ElementID

<a href="#cb2-5" aria-hidden="true" tabindex="-1"></a>print "Element: "; ElementID ' Output: Element: 6</code></pre></div>

<h3

id="example-3-get-the-element-position-of-the-maximum-value-of-an-1d-array">Example

3: Get the element position of the maximum value of an 1D array</h3>

<div class="sourceCode" id="cb3"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb3-3" aria-hidden="true" tabindex="-1"></a>A = [1,9,6,4,5,3,7,8,2]

<a href="#cb3-4" aria-hidden="true" tabindex="-1"></a>m = max(A)

<a href="#cb3-5" aria-hidden="true" tabindex="-1"></a>SEARCH A, m, ElementID

<a href="#cb3-6" aria-hidden="true" tabindex="-1"></a>PRINT "Element: "; ElementID ' Output: Element: 2</code></pre></div>

<h3 id="example-4-1d-array-of-strings">Example 4: 1D array of

strings</h3>

<div class="sourceCode" id="cb4"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb4-3" aria-hidden="true" tabindex="-1"></a>A = ["car", "dog", "house", "paper"]

<a href="#cb4-4" aria-hidden="true" tabindex="-1"></a>SEARCH A, "house", ElementID

<a href="#cb4-5" aria-hidden="true" tabindex="-1"></a>PRINT "Element: "; ElementID ' Output: Element: 3</code></pre></div>

<h3

id="example-5-compare-function-find-first-element-greater-than-the-key">Example

5: Compare function, find first element greater than the key</h3>

<div class="sourceCode" id="cb5"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb5-3" aria-hidden="true" tabindex="-1"></a>func findgreater(x,y)

<a href="#cb5-4" aria-hidden="true" tabindex="-1"></a> findgreater = !(x > y)

<a href="#cb5-5" aria-hidden="true" tabindex="-1"></a>end

<a href="#cb5-7" aria-hidden="true" tabindex="-1"></a>A = [1,2,3,4,5,6,7,8,9]

<a href="#cb5-8" aria-hidden="true" tabindex="-1"></a>search A, 5, ElementID USE findgreater(x,y)

<a href="#cb5-9" aria-hidden="true" tabindex="-1"></a>PRINT "Element: "; ElementID ' Output: Element: 6</code></pre></div>

<h3

id="example-6-compare-function-find-first-element-which-can-be-divided-by-the-key">Example

6: Compare function, find first element which can be divided by the

key</h3>

<div class="sourceCode" id="cb6"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>option base 1

<a href="#cb6-3" aria-hidden="true" tabindex="-1"></a>func FindFirstDivider(x,y)

<a href="#cb6-4" aria-hidden="true" tabindex="-1"></a> FindFirstDivider = ( (x mod y) > 0 )

<a href="#cb6-5" aria-hidden="true" tabindex="-1"></a>end

<a href="#cb6-7" aria-hidden="true" tabindex="-1"></a>A = [1,5,7,4,5,6,7,8,9]

<a href="#cb6-8" aria-hidden="true" tabindex="-1"></a>search A, 3, ElementID USE FindFirstDivider(x,y)

<a href="#cb6-9" aria-hidden="true" tabindex="-1"></a>PRINT "Element: "; ElementID ' Output: Element: 6</code></pre></div>

<h3

id="example-7-compare-function-find-first-element-with-string-length-given-by-the-key">Example

7: Compare function, find first element with string length given by the

key</h3>

<div class="sourceCode" id="cb7"><pre

class="sourceCode smallbasic"><code class="sourceCode smallbasic"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a>func FindFirstStringWithLenght(x,y)

<a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> FindFirstStringWithLenght = ( len(x) != y )

<a href="#cb7-3" aria-hidden="true" tabindex="-1"></a>end

<a href="#cb7-5" aria-hidden="true" tabindex="-1"></a>A = ["car", "dog", "house", "paper"]

<a href="#cb7-6" aria-hidden="true" tabindex="-1"></a>SEARCH A, 5, ElementID use FindFirstStringWithLenght(x,y)

<a href="#cb7-7" aria-hidden="true" tabindex="-1"></a>PRINT "Element: "; elementID ' Output: Element: 3</code></pre></div>

<div class="header">Code samples using SEARCH</div>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/getting started/003 conditional branching.bas">003 conditional branching.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/blackbox.bas">blackbox.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/Blackbox.bas">Blackbox.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/checkers.bas">checkers.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/chess.bas">chess.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/dogstar5.bas">dogstar5.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/network/duckduckgo.bas">duckduckgo.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/index.bas">index.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 3/klotski_solver.bas">klotski_solver.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/graphics 4/networking.bas">networking.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/games 1/rogue trader.bas">rogue trader.bas </a>

<a target="_github" href="https://raw.githubusercontent.com/smallbasic/smallbasic.samples/master/applications/TinyBASIC.bas">TinyBASIC.bas </a>

</div>

<a href="/reference/581.html">APPEND </a>

<a href="/reference/1432.html">ARRAY </a>

<a href="/reference/542.html">DELETE </a>

<a href="/reference/543.html">EMPTY </a>

<a href="/reference/571.html">ERASE </a>

<a href="/reference/544.html">INSERT </a>

<a href="/reference/555.html">ISARRAY </a>

<a href="/reference/556.html">ISDIR </a>

<a href="/reference/557.html">ISFILE </a>

<a href="/reference/558.html">ISLINK </a>

<a href="/reference/1430.html">ISMAP </a>

<a href="/reference/559.html">ISNUMBER </a>

<a href="/reference/560.html">ISSTRING </a>

<a href="/reference/561.html">LBOUND </a>

<a href="/reference/547.html">REDIM </a>

<a href="/reference/572.html">RESTORE </a>

<a href="/reference/548.html">SEARCH </a>

<a href="/reference/567.html">UBOUND </a>

</div>

This page was last edited on Tue, 1 Aug 2023 13:59:34 +0200

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