Programming Cheatsheet

Given an array of integers, where all elements but one occur twice, find the unique element. Example a = [1, 2, 3, 4, 3, 2 ,2] The unique element is 4. Function Description Complete the lonelyinteger function in the editor below. lonelyinteger has the following parameter(s): ·        int a[n]: an array of integers Returns ·        int: the element that occurs only once Input Format The first line contains a single integer, n  , the number of integers in the array. The second line contains n  space-separated integers that describe the values in  a . Constraints ·        1 <= n < 100 ·        It is guaranteed that n is an odd number and that there is one unique element. ·        0 <= a[i] <= 100, where 0 <= i < n. In Java  import java.io.*; import j...

  Given a square matrix, calculate the absolute difference between the sums of its diagonals. For example, the square matrix  is shown below: 1 2 3 4 5 6 9 8 9   The left-to-right diagonal 1 + 5 + 9 = 15. The right to left diagonal 3 + 5 + 9 = 17. Their absolute difference is 2. Function description Complete the diagonalDifference  function in the editor below. diagonalDifference takes the following parameter: int arr[n][m]: an array of integers Return int: the absolute diagonal difference Input Format The first line contains a single integer, , the number of rows and columns in the square matrix . Each of the next  lines describes a row, , and consists of  space-separated integers . Output Format Return the absolute difference between the sums of the matrix's two diagonals as a single integer. Sample Input 3 11 2 4 4 5 6 10 8 -12 Sample Output 15 Explanati...