In this statement Object[][] data = new Object[sheet.getLastRowNum()][sheet.getRow(0).getLastCellNum()]; It is creating an array of references to arrays of references to Objects. The first array is for rows and the leaf arrays are for column values. In reality, only String objects are added so I would write it like this. int rows = sheet.getLastRowNum(); int columns … Read more
This could probably be shorter, but it works. public static int findMostCommonElement(int[] list) { int max = 0; for (int i : list) if (i > max) max = i; int[] newArr = new int[max]; for (int i = 0; i < max; i++) newArr[i] = 0; for (int i = 0; i < max; … Read more
First visit to http://www.jsonschema2pojo.org/ and create your model classes. (or create manually) Than use to https://github.com/google/gson library for parsing solved How to catch the JSON response when response have two or more arrays in android [duplicate]
Example of database connection : //ENTER YOUR DATABASE CONNECTION INFO BELOW: $hostname=”localhost”; $database=”dbname”; $username=”username”; $password=”password”; //DO NOT EDIT BELOW THIS LINE $link = mysql_connect($hostname, $username, $password); mysql_select_db($database) or die(‘Could not select database’); Exemple of INSERT array in database : $json = file_get_contents(‘php://input’); $obj = json_decode($json,true); //Database Connection require_once ‘db.php’; /* insert data into DB */ … Read more
Problem: ArrayList<String> means you want an array-backed list that can hold String objects. This restricts the add method to only accept strings. The mistake you are making is that you are passing other non-String objects into the add method. Bad Answer 1: The easy way out is to change it to ArrayList<Object>, but this defeats … Read more
Consider: std::vector <std::unique_ptr <Wire>> 2 solved Variable size array of pointers C++ [closed]
A quick glance at the array page in the manual shows a reverse method > arr = [‘a’, ‘b’, ‘c’]; arr.reverse(); console.log(arr); [ ‘c’, ‘b’, ‘a’ ] solved How to reverse an array in Javascript?
//if you’re using Eclipse, press ctrl-shift-f to “beautify” your code and make it easier to read int arr[] = new int[3]; //create a new array containing 3 elements for (int i = 0; i < 3; i++) { arr[i] = i;//assign each successive value of i to an entry in the array } int res … Read more
Don’t use square brackets with your ArrayList. Lists are not arrays. ArrayList<Integer> list = new ArrayList<>(5); Add to it with list.add(sc.nextInt()); Remove from it with list.remove(index); 2 solved I can’t understand ArrayList[]= new Arraylist[]; declaration.
The trivial answer is to split the string: String[] fragments = theString.split(” “, 6); Given that the fragments have specific meanings (and presumably you want some of them as non-string types), it might be more readable to use a Scanner: Scanner sc = new Scanner(theString); int x = sc.nextInt(); int y = sc.nextInt(); int width … Read more
String.valueOf().length() returns 11 because that is the number of digits/characters in the output (i.e. [@936016386 – an address – has 11 characters) solved How do I properly test the char[ ] fields in my custom object for nulls, blanks, or empty? and Why do char[ ] indicate a length of 11?
Right now you generate any word type just once. Just generate the randoms before any phase function makeAPoem() { var nouns = [“cat”, “crow”, “snow”, “home”, “boy”, “raven”, “tree”, “moon”, “night”, “day”, “winter”, “heart”, “angel”, “madam”, “darkness”, “chamber”, “lady”, “bird”, “person”, “eye”, “darkness”, “air”]; var verbs = [“ran”, “felt”, “fell”, “focused”, “looked”, “stared”, “sat”, “sighed”, … Read more
Because you are initializing an array you could use the Array.from syntax. This would allow you to declare and initialize your array on the same line. const value = 300000; const yaxispoints = value / 10; const array1= Array.from({length: 11}, (v,i) => i * yaxispoints); array1.forEach(v => console.log(v)); solved Assign values to array javascript
int sign(int v) { return (v == 0) ? 0 : ((v > 0) ? 1 : -1); } int check(int v[], int n) // return 1 for true, 0 for false { int sign = 1; int count = 1; int sc = 0; for (int i = 0; i < n; i++) { … Read more
#include <stdio.h> #include <stdlib.h> #include <string.h> typedef int Type; typedef struct vector { size_t size; size_t capacity; Type *array; } Vector; Vector *vec_make(void){ Vector *v = malloc(sizeof(*v)); if(v){ v->size = 0; v->capacity=16; v->array = malloc(v->capacity * sizeof(Type)); } return v; } void vec_free(Vector *v){ free(v->array); free(v); } void vec_add(Vector *v, Type value){ v->array[v->size++] = value; … Read more