**Floyd’s Triangle:**

- Floyd’s triangle is a right angled triangular array of natural numbers.
- It named after Robert Floyd.
- Rows of the triangle filled by consecutive numbers.
- First row will have single number which is 1.
- Second row will have two numbers, which are 2 and 3
- Third row will have three numbers, which are 4, 5 and 6..
- And so on

**Example**:

First 5 lines… 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

**Approach**:

- Two nested loops.
- Outer loop will take care for rows.
- Inner loop will take care of printing the numbers.
- Line break after each iteration of inner loop.
- Keep track of numbers printed so far in a variable.
- See the code for more understanding.

**Code**:

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public class FloydTriangle { | |

public static void printTriangle(int rows){ | |

if(rows<=0) | |

return; | |

int count=1; | |

int number = 1; | |

while(count<=rows){ | |

for (int i = 0; i <count ; i++) { | |

System.out.print(number + " "); | |

number++; | |

} | |

count++; | |

System.out.println(); | |

} | |

} | |

public static void main(String[] args) { | |

int rows = 7; | |

printTriangle(rows); | |

} | |

} |

**Output**:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28