Easy Beginners Problems > Implementation

You are given an array **A** with total **N** integer numbers ranging from **1** to **N-1**, where all elements from **1** to **N-1** appears exactly once but one element appears exactly twice. Your task is to find out that element which occur exactly two times. Input: ------ Input starts with an integer **T (1<=T<=20)**, denoting the number of test cases.<br> Each case contains an integer **N (2 ≤ N ≤ 10000)** denoting the number of elements of array **A**. The next line will contain **N** integers separated by spaces, denoting the elements of the array **A**. Each of these integers will be in the range from **1** to **N-1**. Output: ------- For each case of input, output the element which occurs exactly twice in the given array. Sample Input ------------ 1 5 1 2 4 3 1 Sample Output ------------- 1

Bishal Gautam

Language |
Time Limit (seconds) |

C | 2.00 |

C++ | 2.00 |

C++14 | 2.00 |

C# | 2.00 |

Go | 2.00 |

Java | 2.00 |

JavaScript | 2.00 |

Objective-C | 2.00 |

Perl | 2.00 |

PHP | 2.00 |

Python | 2.00 |

Python3 | 2.00 |

Ruby | 2.00 |

VB.Net | 2.00 |

Solve/Submission

# | User | Language | Timing |
---|---|---|---|

01 | Pure_Protea | Cpp14 | 0.00s |

02 | asmatikur | C | 0.01s |

03 | mhiceiuk | Cpp | 0.01s |

04 | notorious_94 | Cpp14 | 0.01s |

05 | Datta | Cpp | 0.01s |

06 | Bhuiyan | C | 0.01s |

07 | Chayti_Saha98 | Cpp | 0.01s |

08 | UH55 | Cpp | 0.01s |

09 | tanmoy_1703002 | C | 0.01s |

10 | Sarwar05 | Cpp14 | 0.01s |

11 | 31_ipn | Cpp | 0.01s |

12 | rmahbub63 | C | 0.01s |

13 | terminator_c | Cpp | 0.01s |

14 | Anubis | Cpp | 0.01s |

15 | haliban_25 | C | 0.01s |

16 | rashedul_riad | Cpp | 0.01s |

17 | rakibislam1996 | Cpp14 | 0.01s |

18 | mohibur | Cpp | 0.01s |

19 | SMunira | C | 0.02s |

20 | Bisnu039 | Cpp | 0.02s |

21 | Freaky_Weirdo | Cpp | 0.02s |

22 | Robin008 | Cpp | 0.02s |

23 | Salam_35s | Cpp | 0.02s |

24 | mepromee | Cpp | 0.02s |

25 | imr_dev | Cpp | 0.02s |

26 | iamaaasif | C | 0.02s |

27 | Sheikh_Fahad | Cpp | 0.02s |

28 | ms_login | Cpp14 | 0.02s |

29 | subhashis_cse | Cpp | 0.02s |

30 | rafi_1703076 | Cpp | 0.02s |

31 | cosmicray001 | Cpp | 0.02s |

32 | Mushfiqur_Rahman | C | 0.02s |

33 | sazid | Cpp | 0.02s |

34 | akash_1703044 | C | 0.02s |

35 | shajib_1703025 | Cpp | 0.02s |

36 | feodorv | C | 0.02s |

37 | Sohelr360 | Cpp | 0.02s |

38 | Arian_Ahmed | C | 0.02s |

39 | sakib_cse17 | C | 0.02s |

40 | sohanur_cse27 | C | 0.02s |

41 | Mhkhaled | Cpp | 0.02s |

42 | duronto20 | Cpp | 0.03s |

43 | atikhashmee | Cpp | 0.03s |

44 | hanian | Cpp | 0.03s |

45 | sagor_1703011 | C | 0.03s |

46 | Taifaaa | Cpp | 0.03s |

47 | Noshin_1703086 | C | 0.03s |

48 | Logic_Hunter | Cpp14 | 0.03s |

49 | Rama_Kundu | C | 0.03s |

50 | Vega_CSE | C | 0.03s |

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