for (i in strings.indices) {
          lengths[i] = strings[i].toLong()
        }
      } catch (_: NumberFormatException) {
        invalidLengths(strings)
      }
    }

    /** Append space-prefixed lengths to [writer]. */
    @Throws(IOException::class)
    internal fun writeLengths(writer: BufferedSink) {
      for (length in lengths) {
        writer.writeByte(' '.code).writeDecimalLong(length)

            return;
        }
        if (expected == null || actual == null) {
            fail("Arrays are not equal: one is null");
        }
        assertEquals("Array lengths differ", expected.length, actual.length);
        for (int i = 0; i < expected.length; i++) {
            assertEquals("Array element at index " + i + " differs", expected[i], actual[i]);
        }
    }

    @Override
    public void setUp() throws Exception {

        assertNotNull("Expected array is null but actual is not", expected);
        assertNotNull("Actual array is null but expected is not", actual);
        assertEquals("Array lengths differ", expected.length, actual.length);
        for (int i = 0; i < expected.length; i++) {
            assertEquals("Arrays differ at index " + i, expected[i], actual[i]);
        }
    }

    // Test implementation of FessUser interface

   * Equivalence}.
   *
   * <p>For example, given an {@link Equivalence} for {@link String strings} named {@code equiv}
   * that tests equivalence using their lengths:
   *
   * {@snippet :
   * equiv.wrap("a").equals(equiv.wrap("b")) // true
   * equiv.wrap("a").equals(equiv.wrap("hello")) // false
   * }
   *

    a = Arrays.<@Nullable Integer>asList(4, 8, 15, null, 23, 42);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a, b));
    assertFalse(elementsEqual(b, a));

    // Different lengths.
    a = asList(4, 8, 15, 16, 23);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a, b));
    assertFalse(elementsEqual(b, a));
  }

  public void testToString() {

    a = Arrays.<@Nullable Integer>asList(4, 8, 15, null, 23, 42);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a, b));
    assertFalse(elementsEqual(b, a));

    // Different lengths.
    a = asList(4, 8, 15, 16, 23);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a, b));
    assertFalse(elementsEqual(b, a));
  }

  public void testToString() {

        if (target1 == null || target2 == null) {
            return false;
        }
        final int length1 = target1.length();
        final int length2 = target2.length();
        if (length1 < length2) {
            return false;
        }
        final String s1 = target1.substring(length1 - length2);
        return s1.equalsIgnoreCase(target2);
    }

    /**

          var i = 4
          val limit = minOf(a.length, b.length)
          while (i < limit) {
            val charA = a[i]
            val charB = b[i]
            if (charA != charB) return if (charA < charB) -1 else 1
            i++
          }
          val lengthA = a.length
          val lengthB = b.length
          if (lengthA != lengthB) return if (lengthA < lengthB) -1 else 1
          return 0
        }
      }

      }

    // Read the length.
    val length0 = source.readByte().toInt() and 0xff
    val length =
      when {
        length0 == 0b1000_0000 -> {
          throw ProtocolException("indefinite length not permitted for DER")
        }
        (length0 and 0b1000_0000) == 0b1000_0000 -> {
          // Length specified over multiple bytes.
          val lengthBytes = length0 and 0b0111_1111

c="",d=0;d<b.length;d++){for(var e=!0,f=0;f<a&&f+d+a<b.length;f++)e=e&&b.charAt(f+d)===b.charAt(f+d+a);f<a&&(e=!1),e?(d+=a-1,e=!1):c+=b.charAt(d)}return c};return b+=4*a.length,b+=1*(c(1,a).length-a.length),b+=1*(c(2,a).length-a.length),b+=1*(c(3,a).length-a.length),b+=1*(c(4,a).length-a.length),a.match(/(.*[0-9].*[0-9].*[0-9])/)&&(b+=5),a.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)&&(b+=5),a.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)&&(b+=10),a.match(/([a-zA-Z])/)&&a.match(/([0-9])/)&&(b+=15)...