Determine if a string has all unique characters: Difference between revisions

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@@ Line 678: / Line 678: @@
     size_t len = str.length();
     std::cout << "input: \"" << str << "\", length: " << len << '\n';
-    bool unique = true;
+    for (size_t i = 0; i < len; ++i)
-    for (size_t i = 0; i < len && unique; ++i)
     {
         for (size_t j = i + 1; j < len; ++j)
@@ Line 689: / Line 688: @@
                     << "' (hex " << std::hex << static_cast<unsigned int>(str[i])
                     << ") occurs at positions " << std::dec << i + 1
-                    << " and " << j + 1 << ".\n";
+                    << " and " << j + 1 << ".\n\n";
-                unique = false;
+                return;
-                break;
             }
         }
     }
+    std::cout << "String contains no repeated characters.\n\n";
-    if (unique)
-        std::cout << "String contains no repeated characters.\n";
-    std::cout << '\n';
 }