maximumSubsequence应该是一个函数。
    testString: 'assert(typeof maximumSubsequence=="function","maximumSubsequence should be a function.");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[0])+")应该返回一个数组。'
    testString: 'assert(Array.isArray(maximumSubsequence(tests[0])),"maximumSubsequence("+JSON.stringify(tests[0])+") should return an array.");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[0])+")应返回"+JSON.stringify(results[0])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[0]),results[0],"maximumSubsequence("+JSON.stringify(tests[0])+") should return "+JSON.stringify(results[0])+".");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[1])+")应返回"+JSON.stringify(results[1])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[1]),results[1],"maximumSubsequence("+JSON.stringify(tests[1])+") should return "+JSON.stringify(results[1])+".");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[2])+")应返回"+JSON.stringify(results[2])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[2]),results[2],"maximumSubsequence("+JSON.stringify(tests[2])+") should return "+JSON.stringify(results[2])+".");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[3])+")应返回"+JSON.stringify(results[3])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[3]),results[3],"maximumSubsequence("+JSON.stringify(tests[3])+") should return "+JSON.stringify(results[3])+".");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[4])+")应返回"+JSON.stringify(results[4])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[4]),results[4],"maximumSubsequence("+JSON.stringify(tests[4])+") should return "+JSON.stringify(results[4])+".");'
  - text: 'maximumSubsequence("+JSON.stringify(tests[5])+")应返回"+JSON.stringify(results[5])+" 。'
    testString: 'assert.deepEqual(maximumSubsequence(tests[5]),results[5],"maximumSubsequence("+JSON.stringify(tests[5])+") should return "+JSON.stringify(results[5])+".");'
```