ChatTranscript | Topcoder Archive

Problem Statement

You have received the transcript of an online chat. Each element of transcript corresponds to a line. You want to know how many times name said something. To do this, count how many lines begin with name immediately followed by a colon. This comparison is case sensitive.

Definition

Class:: ChatTranscript
Method:: howMany
Parameters:: String[], String
Returns:: int
Method signature:: int howMany(String[] transcript, String name)
(be sure your method is public)

Constraints

transcript will contain between 1 and 50 elements inclusive.
Each element of transcript will contain between 1 and 50 characters inclusive.
Each character in each element of transcript will have ASCII value between 32 and 126 inclusive.
name will contain between 1 and 50 characters inclusive.
Each character in name will be a letter (A-Z, a-z) or a digit (0-9).

Examples

{
"Bob: Hello Tim.",
"Tim: Hello Bob.",
"Bob: How are ya Tim?",
"Frank: Stop chatting!"
}

"Bob"

Returns: 2

Bob managed to say two things before Frank entered the conversation.

{
"Bob: This is a long",
"sentence that takes 2 lines.",
"Tim: Yes it is.",
"Bob : I am not Bob.",
"Frank: No you aren't!",
" Bob: Neither am I."
}

"Bob"

Returns: 1

Only one line begins with "Bob:" (quotes for clarity).

{
"Crazy1010: !@LK%#L%K @#L%K @#L%K@#L%K2kl53k2",
"Bob: You are crazy.",
"Crazy1010 Yup #@LK%$L!K%LK%!K% !K afmas,"
}

"Crazy1010"

Returns: 1

{
"A:A:A:A:A:A:A:A:A",
"b:b:b:b:b:b:b:b:b"
}

"B"

Returns: 0

```
{"A:A:A:A:A:A:A:A:A"}
```
```
"A"
```
```
Returns: 1
```

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