Ітерація у двовимірному масиві
How to Iterate Inside Two-Dimensional Array Using a for-loop?
Як ітеруватися всередині двовимірного масиву з допомогою циклу for?
Main.java
12345678910111213141516package com.example; public class Main { public static void main(String[] args) { int[][] twoDimensionalArray = { {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16} }; for (int i = 0; i < twoDimensionalArray.length; i++) { for (int j = 0; j < twoDimensionalArray[0].length; j++) { System.out.print(twoDimensionalArray[i][j] + " "); } System.out.println(); } } }
Let's delve into the meaning of each element in the code snippet provided above:
int[][] twoDimensionalArray =
- This line initializes a two-dimensional array;for (int i = 0; i < twoDimensionalArray.length; i++)
- The first for-loop iterates over the rows of our matrix. While we're on the first row, our program enters the nested loop, which doesn't impact the outer loop. The variablei
represents the current row number;for (int j = 0; j < twoDimensionalArray[0].length; j++)
- The second for-loop iterates over the columns of the matrix. While we're on the 0th row, we iterate through the columns of that row. The variablej
represents the current column number;System.out.print(twoDimensionalArray[i][j] + " ");
- In this line, we useSystem.out.print
to display our values in a single line. Let's see how it operates: while we're on the 0th row, we iterate through the columns on that row. For example,array[0][1]
, followed byarray[0][2]
, and so on. We continue through the columns as long asj
is less thanarray[0].length
. Once we reacharray[0].length
, we return to the outer array and move to the first row. For example,array[0][3] -> array[1][0]
. We've reached our boundaries and then transitioned to row 1.
Swipe to start coding
Your task is to locate and display the diagonal (from the top-left corner to the bottom-right corner) of the provided matrix on the screen:
Note
The diagonal represents a line in the matrix where the row and column numbers are identical.
Рішення
solution.java
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How to Iterate Inside Two-Dimensional Array Using a for-loop?
Як ітеруватися всередині двовимірного масиву з допомогою циклу for?
Main.java
12345678910111213141516package com.example; public class Main { public static void main(String[] args) { int[][] twoDimensionalArray = { {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16} }; for (int i = 0; i < twoDimensionalArray.length; i++) { for (int j = 0; j < twoDimensionalArray[0].length; j++) { System.out.print(twoDimensionalArray[i][j] + " "); } System.out.println(); } } }
Let's delve into the meaning of each element in the code snippet provided above:
int[][] twoDimensionalArray =
- This line initializes a two-dimensional array;for (int i = 0; i < twoDimensionalArray.length; i++)
- The first for-loop iterates over the rows of our matrix. While we're on the first row, our program enters the nested loop, which doesn't impact the outer loop. The variablei
represents the current row number;for (int j = 0; j < twoDimensionalArray[0].length; j++)
- The second for-loop iterates over the columns of the matrix. While we're on the 0th row, we iterate through the columns of that row. The variablej
represents the current column number;System.out.print(twoDimensionalArray[i][j] + " ");
- In this line, we useSystem.out.print
to display our values in a single line. Let's see how it operates: while we're on the 0th row, we iterate through the columns on that row. For example,array[0][1]
, followed byarray[0][2]
, and so on. We continue through the columns as long asj
is less thanarray[0].length
. Once we reacharray[0].length
, we return to the outer array and move to the first row. For example,array[0][3] -> array[1][0]
. We've reached our boundaries and then transitioned to row 1.
Swipe to start coding
Your task is to locate and display the diagonal (from the top-left corner to the bottom-right corner) of the provided matrix on the screen:
Note
The diagonal represents a line in the matrix where the row and column numbers are identical.
Рішення
solution.java
Дякуємо за ваш відгук!
Awesome!
Completion rate improved to 2.7single