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Jul 17th, 2018
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  1. var array = [true, false, true]
  2.  
  3. function isValid(a) {
  4.     var trueSeenAlready = false
  5.     for (var i = 0; i < a.length; i++) {
  6.         if (trueSeenAlready && a[i]) return false
  7.         trueSeenAlready |= a[i]
  8.     }
  9.     return trueSeenAlready
  10. }
  11.    
  12. console.log(isValid(array))
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