feat: updates feb 4 2025

Author: Shamik07

1790-string-swap-string.dart

@@ -0,0 +1,40 @@
+class Solution {
+  bool areAlmostEqual(String s1, String s2) {
+    if (s1 == s2) return true;
+
+    if (s1.length != s2.length) return false;
+
+    List<int> diffs = [];
+
+    for (int i = 0; i < s1.length && diffs.length <= 2; i++) {
+      if (s1[i] != s2[i]) {
+        diffs.add(i);
+      }
+    }
+
+    return diffs.length == 2 &&
+        s1[diffs[0]] == s2[diffs[1]] &&
+        s1[diffs[1]] == s2[diffs[0]];
+  }
+}
+
+void main() {
+  final solution = Solution();
+
+  // Test cases
+  final testCases = [
+    {'s1': 'bank', 's2': 'kanb', 'expected': true},
+    {'s1': 'attack', 's2': 'defend', 'expected': false},
+    {'s1': 'kelb', 's2': 'kelb', 'expected': true},
+  ];
+
+  for (int i = 0; i < testCases.length; i++) {
+    final test = testCases[i];
+    final result =
+        solution.areAlmostEqual(test['s1'] as String, test['s2'] as String);
+    print('Test case ${i + 1}:');
+    print('Input: s1 = "${test['s1']}", s2 = "${test['s2']}"');
+    print('Expected: ${test['expected']}, Got: $result');
+    print('Status: ${result == test['expected'] ? 'PASSED' : 'FAILED'}\n');
+  }
+}