Mercurial > repos > public > sbplib

diff find_elements.m @ 0:48b6fb693025

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Initial commit.
author Jonatan Werpers <jonatan@werpers.com>
date Thu, 17 Sep 2015 10:12:50 +0200
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/find_elements.m	Thu Sep 17 10:12:50 2015 +0200
@@ -0,0 +1,17 @@
+% I = find_elements(a,b)
+% Finds the index of elements a in b.
+% a and b have to be in the same order.
+function I = find_elements(a,b)
+    I = [];
+
+    j = 1;
+    for i = 1:length(a)
+        while b(j) ~= a(i)
+            j = j + 1;
+        end
+        I(end+1) = j;
+        j = j+1;
+    end
+
+    assert(length(I) == length(a),'Expected %d but got %d elements',length(a),length(I))
+end
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