Geeksforgeeks

Error

×

Leaderboard

Showing:

Handle | Score |
---|---|

@Ibrahim Nash | 5725 |

@blackshadows | 5685 |

@akhayrutdinov | 5111 |

@mb1973 | 4989 |

@Quandray | 4908 |

@saiujwal13083 | 4156 |

@sanjay05 | 3762 |

@marius_valentin_dragoi | 3511 |

@sushant_a | 3453 |

@KshamaGupta | 3318 |

@the_coder95 | 3302 |

Complete Leaderboard | |

Handle | Score |

@avaiesshaik782 | 662 |

@arpitsatnalika | 629 |

@code_it_ | 591 |

@prakharxyz | 583 |

@tujhekya | 542 |

@Rahul Jadhav 1 | 458 |

@sivanandh03 | 448 |

@satyam0460 | 433 |

@iamronak | 424 |

@imnm | 424 |

@18eumc107 | 421 |

Complete Leaderboard |

You are given an array **A** of **N** positive and/or negative integers and a value **K**. The task is to find the count of all sub-arrays whose sum is divisible by K.

**Example 1:**

**Input: **N = 6, K = 5
arr[] = {4, 5, 0, -2, -3, 1}
**Output:** 7
**Explanation**: There are 7 sub-arrays whose
is divisible by K {4, 5, 0, -2, -3, 1}, {5},
{5, 0}, {5, 0, -2, -3}, {0}, {0, -2, -3}
and {-2, -3}

**Example 2:**

**Input: **N = 6, K = 2
arr[] = {2, 2, 2, 2, 2, 2}
**Output:** 21
**Explanation**: All subarray sums are
divisible by 7

**Your Task:**

This is a function problem. You don't need to take any input, as it is already accomplished by the driver code. You just need to complete the function **subCount**() that takes array** arr**, integer** N, **and** **integer** K **as parameters and returns the desired output.

**Expected Time Complexity:** O(N+K).

**Expected Auxiliary Space:** O(K).

**Constraints:**

2 ≤ N ≤ 10^{5}

Login to report an issue on this page.

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes
Sub-Array sum divisible by K

...

Please choose 'ReadOnlyMode' if you needn't to 'Edit' the problem e.g. viewing OJ's solution, TestCase Files (TCFs), TimeLimit etc.