2-dimensional arrays

2d_arrays.md

2-Dimensional Arrays

How to create and initialize 2D arrays of integers with:

• M rows
• N columns
• X initial value

C

• Designated-Inits

int dp[M][N] = { [0 ... M-1] = { [0 ... N-1] = X } };

C++

vector<vector<int>> dp(M, vector<int>(N, X));

using VI = vector<int>;
using VVI = vector<VI>;
VVI dp(M, VI(N, X));

Javascript

let dp = Array(M).fill().map(() => Array(N).fill(X));

let dp = [...Array(M)].map(() => Array(N).fill(X));

Python

dp = [[X for j in range(N)] for i in range(M)]

Kotlin

var dp = Array(M){ Array(N){ X } }