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Line 2,131: =={{header\|Ring}}== <lang ring> ~~aList~~alist = [] ~~bList~~blist = [] ~~aList~~alist = ["~~John~~john", "~~Bob~~bob", "~~Mary~~mary", "~~Serena~~serena"] ~~bList~~blist = ["~~Jim~~jim", "~~Mary~~mary", "~~John~~john", "~~Bob~~bob"] ~~aList2~~alist2 = [] for i = 1 to len(~~aList~~alist) flag = 0 for j = 1 to len(~~bList~~blist) if ~~aList~~alist[i] = ~~bList~~blist[j] flag = 1 ok next if (flag = 0) add(~~aList2~~alist2, ~~aList~~alist[i]) ok next ~~see aList2~~ ~~bList2~~blist2 = [] for j = 1 to len(~~aList~~alist) flag = 0 for i = 1 to len(~~bList~~blist) if ~~aList~~alist[i] = ~~bList~~blist[j] flag = 1 ok next if (flag = 0) add(~~bList2~~blist2, ~~bList~~blist[j]) ok next see ~~bList2~~"a +xor b :" see nl see alist2 see blist2 see nl see "a-b :" see nl see alist2 see nl see "b-a :" see nl see blist2 see nl </lang> =={{header\|Ruby}}== With arrays:

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