Question

How to convert a specific column of a decimal matrix to a string in Go

Answer 1

package main

import (
    "fmt"
    "strings"
)

func convertColumnToString(matrix [][]int, rows int, col int) string {
    var b strings.Builder

    for i := 0; i < rows; i++ {
        fmt.Fprintf(&b, "%d ", matrix[i][col])
    }

    return b.String()
}

func main() {
    matrix := [][]int{
        {4, 7, 9, 18, 29, 0},
        {1, 9, 18, 99, 4, 3},
        {9, 17, 89, 2, 7, 5},
        {19, 49, 6, 1, 9, 8},
        {29, 4, 7, 9, 18, 6},
    }

    col := 3
    rows := len(matrix)

    result := convertColumnToString(matrix, rows, col)

    fmt.Println(result)
}



/*
run:

18 99 2 1 9 

*/

 

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