Initial data commit

Task/Singly-linked-list-Element-insertion/Zig/singly-linked-list-element-insertion-1.zig

@@ -0,0 +1,42 @@
+const std = @import("std");
+
+var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
+
+const allocator = arena.allocator();
+
+pub fn LinkedList(comptime Value: type) type {
+    return struct {
+        const This = @This();
+
+        const Node = struct {
+            value: Value,
+            next: ?*Node,
+        };
+
+        head: ?*Node,
+        tail: ?*Node,
+
+        pub fn init() This {
+            return LinkedList(Value) {
+                .head = null,
+                .tail = null,
+            };
+        }
+
+        pub fn add(this: *This, value: Value) !void {
+            var newNode = try allocator.create(Node);
+
+            newNode.* = .{ .value = value, .next = null };
+
+            if (this.tail) |tail| {
+                tail.next = newNode;
+                this.tail = newNode;
+            } else if (this.head) |head| {
+                head.next = newNode;
+                this.tail = newNode;
+            } else {
+                this.head = newNode;
+            }
+        }
+    };
+}

Task/Singly-linked-list-Element-insertion/Zig/singly-linked-list-element-insertion-2.zig

@@ -0,0 +1 @@
+var l1 = LinkedList(i32).init();

Task/Singly-linked-list-Element-insertion/Zig/singly-linked-list-element-insertion-3.zig

@@ -0,0 +1 @@
+try list.add(1);