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Task/String-matching/Liberty-BASIC/string-matching.liberty

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+'1---Determining if the first string starts with second string
+st1$="first string"
+st2$="first"
+if left$(st1$,len(st2$))=st2$ then
+    print "First string starts with second string."
+end if
+
+'2---Determining if the first string contains the second string at any location
+'2.1---Print the location of the match for part 2
+st1$="Mississippi"
+st2$="i"
+if instr(st1$,st2$) then
+    print "First string contains second string."
+    print "Second string is at location ";instr(st1$,st2$)
+end if
+
+'2.2---Handle multiple occurrences of a string for part 2.
+pos=instr(st1$,st2$)
+while pos
+    count=count+1
+    pos=instr(st1$,st2$,pos+len(st2$))
+wend
+print "Number of times second string appears in first string is ";count
+
+'3---Determining if the first string ends with the second string
+st1$="first string"
+st2$="string"
+if right$(st1$,len(st2$))=st2$ then
+    print "First string ends with second string."
+end if