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Implement loadTriangle method (#606) #610

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Implement loadTriangle method (#606) #610

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21 changes: 18 additions & 3 deletions src/main/java/NumberTriangle.java
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Original file line number Diff line number Diff line change
Expand Up @@ -110,7 +110,7 @@ public static NumberTriangle loadTriangle(String fname) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));


// TODO define any variables that you want to use to store things
NumberTriangle[] prevRow = new NumberTriangle[0];

// will need to return the top of the NumberTriangle,
// so might want a variable for that.
Expand All @@ -122,9 +122,24 @@ public static NumberTriangle loadTriangle(String fname) throws IOException {
// remove when done; this line is included so running starter code prints the contents of the file
System.out.println(line);

// TODO process the line
String[] nums = line.trim().split("\\s+");
NumberTriangle[] currRow = new NumberTriangle[nums.length];

//read the next line
for (int i = 0; i < nums.length; i++) {
currRow[i] = new NumberTriangle(Integer.parseInt(nums[i]));
}

if (prevRow.length > 0) {
for (int i = 0; i < prevRow.length; i++) {
prevRow[i].setLeft(currRow[i]);
prevRow[i].setRight(currRow[i + 1]);
}
} else {
// first line = top of the triangle
top = currRow[0];
}

prevRow = currRow;
line = br.readLine();
}
br.close();
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