Added codes for 15 Feb

GeeksForGeeks/February/15-2-24/GFG.java

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+//{ Driver Code Starts
+//Initial Template for Java
+
+import java.util.*;
+import java.lang.*;
+import java.io.*;
+class GFG
+{
+    public static void main(String[] args) throws IOException
+    {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        int T = Integer.parseInt(br.readLine().trim());
+        while(T-->0)
+        {
+            int n = Integer.parseInt(br.readLine().trim());
+            int[][] paths = new int[n][n];
+            for(int i = 0; i < n; i++){
+                String[] s = br.readLine().trim().split(" ");
+                for(int j = 0; j < n; j++){
+                    paths[i][j] = Integer.parseInt(s[j]);
+                }
+            }
+            Solution obj = new Solution();
+            int ans = obj.isPossible(paths);
+            System.out.println(ans);
+
+        }
+    }
+}
+
+// } Driver Code Ends
+
+
+//User function Template for Java
+
+class Solution
+{
+    public int isPossible(int[][] paths)
+    {
+        // Code here
+        for(int i=0;i<paths.length;i++)
+        {
+            int cnt = 0;
+
+            for(int j=0;j<paths[0].length;j++)
+            {
+                cnt+=paths[i][j];
+            }
+
+            if(cnt%2!=0)
+            {
+                return 0;
+            }
+        }
+        return 1;
+    }
+}

GeeksForGeeks/February/15-2-24/README.md

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+Time complexity - O(n^2)
+Space complexity - O(1)

LeetCode/February/15-2-24/README.md

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+Time complexity - O(sort)
+Space complexity - O(sort)

LeetCode/February/15-2-24/Solution.java

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+class Solution 
+{
+    public long largestPerimeter(int[] nums)
+    {
+        long prefix = Arrays.stream(nums).asLongStream().sum();
+
+        Arrays.sort(nums);
+
+        for (int i = nums.length - 1; i >= 2; --i) 
+        {
+            prefix -= nums[i];
+            if (prefix > nums[i])
+                return prefix + nums[i];
+        }
+
+        return -1;
+    }
+}