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20Day-SecondLargestNumber.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.5.0 <0.9.0;
+
+   contract Day2 {
+   //Create a function secondMax(array, length of array) . This secondMax() will take two arguments - a dynamic int type array and length of the array.
+    function secondMax(int256[] memory arr, uint256 size) public pure returns(int256) {
+            for (uint256 i = 0; i < size - 1; i++) {
+                for (uint256 j = i + 1; j < size; j++) {
+                    if (arr[i] < arr[j]) {
+                        int256 temp = arr[i];
+                        arr[i] = arr[j];
+                        arr[j] = temp;
+                    }
+                }
+            }
+
+            return arr[1];
+}
+   }
+
+   //The secondMax() will find the second largest element in an array. For Example - If array =[40, 12, 31, 6] then secondMax() will return 31. If array =[9, 122, 37, 54] then secondMax() will return 54.