Company: Coinbase
Difficulty: medium
\n \n \n \n \n Package Codes Problem \n \n body {\n font-family: Arial, sans-serif;\n line-height: 1.6;\n }\n .problem-container {\n max-width: 800px;\n margin: 0 auto;\n padding: 20px;\n border: 1px solid #ccc;\n border-radius: 8px;\n background-color: #f9f9f9;\n }\n h3 {\n color: #333;\n }\n .problem-description, .input-format, .output-format, .constraints, .examples {\n margin-bottom: 20px;\n }\n .example {\n background-color: #fff;\n padding: 10px;\n border: 1px solid #ddd;\n border-radius: 4px;\n }\n pre {\n background-color: #f4f4f4;\n padding: 10px;\n border: 1px solid #ddd;\n border-radius: 4px;\n overflow-x: auto;\n }\n .explanation {\n margin-top: 10px;\n color: #555;\n }\n \n \n \n\n \n \n Package Codes Problem \n In a logistics company, you are given an array of integers packageCodes , representing the codes assigned to packages processed by the system. Analyze packageCodes and find the codes that are both divisible by 3 and contain the digit \\\'7\\\' at least twice. Retur