Given a Binary Tree of size **N**, your task is to complete the function **rightLeafSum()**, that should return the sum of all the leaf nodes that are right child of their parent of the given binary tree.

Example:

```
Input :
1
/ \
2 3
/ \ \
4 5 8
\ / \
2 6 7
Output :
sum = 2 + 5 + 7 = 14
```

**Input:**

The function takes a single arguments as input, the reference pointer to the **root** of the binary tree.

There are **T** test cases and for each test case the function will be called separately.

**Output:**

The function should return the sum of all the right leaf nodes of the binary tree.

**Constraints:**

1<=T<=100

1<=N<=100

**Example:
Input:**

2

2

1 2 L 1 3 R

5

10 20 L 10 30 R 20 40 L 20 60 R 30 90 L

3

60

**Note:**The **Input/Ouput** format and **Example** given are used for system's internal purpose, and should be used by a user for **Expected Output** only. As it is function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.

Author: harshitsidhwa

If you have purchased any course from GeeksforGeeks then please ask your doubt on course discussion forum. You will get quick replies from GFG Moderators there.

d_Coder00 | 134 |

Astikeysingh | 128 |

dungeon_master1299 | 126 |

rajendrashekhawat063 | 115 |

VivSisMMM | 112 |

Pulkit__Sharma__ | 646 |

Anirban166 | 531 |

abducodes | 508 |

Found_me | 474 |

Sathvik Avasarala | 418 |

blackshadows | 5331 |

Ibrahim Nash | 5219 |

akhayrutdinov | 5111 |

mb1973 | 4929 |

Quandray | 4559 |

Login to report an issue on this page.