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16Day-DistinctElements.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.5.0 <0.9.0;
+
+contract Day4 {
+//Create a function distinct(array, length of array)
+//This distinct() will take two arguments - a dynamic uint type array and length of the array.
+//The distinct() will return the number of distinct elements in an array.
+    function distinct(int256[] memory array, uint256 len)
+        public
+        pure
+        returns (uint256)
+    {
+        uint256 i;
+        uint256 j;
+        uint256 count = 1;
+
+        for (i = 1; i < len; i++) {
+            for (j = 0; j < i; j++) {
+                if (array[i] == array[j]) {
+                    break;
+                }
+            }
+            if (i == j) {
+                count++;
+            }
+        }
+        return count;
+    }
+}