CodingBat Java Recursion-1 triangle

about | help | code help+videos | done | prefs

CodingBat code practice

Java > Recursion-1 > triangle
prev | next | chance

We have triangle made of blocks. The topmost row has 1 block, the next row down has 2 blocks, the next row has 3 blocks, and so on. Compute recursively (no loops or multiplication) the total number of blocks in such a triangle with the given number of rows.

triangle(0) → 0
triangle(1) → 1
triangle(2) → 3

...Save, Compile, Run

prev | next | chance | CodingBat > Recursion-1

Forget It! -- delete my code for this problem

Progress graphs, just for fun:
Your progress graph for this problem
Random user progress graph for this problem
Random Epic Progress Graph

Code Help and Videos

Java Example Solution Code
Java String Introduction (video)
Java Substring v2 (video)
Java String Equals and Loops
Java String indexOf and Parsing
Java If and Boolean Logic
If Boolean Logic Example Solution Code 1 (video)
If Boolean Logic Example Solution Code 2 (video)
Java For and While Loops
Java Arrays and Loops

Misc Code Practice

Code Badges new
Introduction to Mod (video)
MakeBricks problem and solution (video x 2)
FizzBuzz the famous code interview question (video)

315.0 Post-solution available

id/email
password

	forgot password
	create account