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13Day-reverseArray.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.5.0 <0.9.0;
+
+contract Day1 {
+//Create a function reverseArray(array, length of array) . This reverseArray() will take two arguments - a dynamic uint type array and length of the array.
+//The reverseArray() will reverse the array.
+    function reverseArray(uint256[] memory arr, uint256 len)
+        public
+        pure
+        returns (uint256[] memory)
+    {
+        uint256 temp;
+        for (uint256 i = 0; i < len / 2; i++) {
+            temp = arr[i];
+            arr[i] = arr[len - i - 1];
+            arr[len - i - 1] = temp;
+        }
+        return arr;
+    }
+}