Row-wise Maximum in Matrix

Easy Matrix

Print the maximum element of each row of a matrix.

Sample input

[[3,1,2],[9,5,7],[4,8,6]]

Sample output

3 9 8

Solution

matrix = [[3, 1, 2], [9, 5, 7], [4, 8, 6]]
result = [max(row) for row in matrix]
print(*result)

const matrix = [[3, 1, 2], [9, 5, 7], [4, 8, 6]];
const result = matrix.map(row => Math.max(...row));
console.log(result.join(" "));

import java.util.Arrays;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {
        int[][] matrix = {{3, 1, 2}, {9, 5, 7}, {4, 8, 6}};
        System.out.println(Arrays.stream(matrix)
            .map(row -> String.valueOf(Arrays.stream(row).max().getAsInt()))
            .collect(Collectors.joining(" ")));
    }
}

fun main() {
    val matrix = arrayOf(intArrayOf(3, 1, 2), intArrayOf(9, 5, 7), intArrayOf(4, 8, 6))
    val result = matrix.map { it.max() }
    println(result.joinToString(" "))
}

let matrix = [[3, 1, 2], [9, 5, 7], [4, 8, 6]]
let result = matrix.map { $0.max()! }
print(result.map(String.init).joined(separator: " "))

void main() {
  final matrix = [[3, 1, 2], [9, 5, 7], [4, 8, 6]];
  final result = matrix.map((row) => row.reduce((a, b) => a > b ? a : b));
  print(result.join(' '));
}

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    vector<vector<int>> matrix = {{3, 1, 2}, {9, 5, 7}, {4, 8, 6}};
    for (int i = 0; i < (int) matrix.size(); i++) {
        cout << *max_element(matrix[i].begin(), matrix[i].end());
        if (i < (int) matrix.size() - 1) cout << " ";
    }
    cout << endl;
    return 0;
}

#include <stdio.h>

int main() {
    int matrix[3][3] = {{3, 1, 2}, {9, 5, 7}, {4, 8, 6}};
    int rows = 3, cols = 3;
    for (int i = 0; i < rows; i++) {
        int mx = matrix[i][0];
        for (int j = 1; j < cols; j++) {
            if (matrix[i][j] > mx) mx = matrix[i][j];
        }
        printf("%d", mx);
        if (i < rows - 1) printf(" ");
    }
    printf("\n");
    return 0;
}