All_Includes.js

/*a string strng
an array of strings arr
Output of function contain_all_rots(strng, arr) (or containAllRots or contain-all-rots):

a boolean true if all rotations of strng are included in arr
false otherwise
Examples:
contain_all_rots(
  "bsjq", ["bsjq", "qbsj", "sjqb", "twZNsslC", "jqbs"]) -> true

contain_all_rots(
  "Ajylvpy", ["Ajylvpy", "ylvpyAj", "jylvpyA", "lvpyAjy", "pyAjylv", "vpyAjyl", "ipywee"]) -> false)
Note:
Though not correct in a mathematical sense

we will consider that there are no rotations of strng == ""
and for any array arr: contain_all_rots("", arr) --> true
Ref: https://en.wikipedia.org/wiki/String_(computer_science)#Rotations

*/


function containAllRots(str, arr) {
    for (var i = 0; i < str.length; i++) {
      if (arr.indexOf(str.slice(i) + str.slice(0, i)) === -1) {
        return false
      }
    }
    return true
  }