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By: a guest on Sep 7th, 2012  |  syntax: None  |  size: 0.25 KB  |  hits: 6  |  expires: Never
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  1. public static final boolean isImoValid(String imo) {
  2.         if (imo == null || imo.length() != 7) {
  3.                 return false;
  4.         }
  5.         char[] a = imo.toCharArray();
  6.         int sum = 0;
  7.         for(int i = 0; i < 6; i++) {
  8.                 sum += (a[i]-48)*(a.length-i);
  9.         }
  10.         return sum % 10 == a[6]-48;
  11. }
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