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How to create a 20x20 matrix with random numbers between 1 and 100 in JavaScript

1 Answer

0 votes
function printAlignedMatrix(matrix) {
    const columnWidths = matrix[0].map((_, colIndex) =>
        Math.max(...matrix.map(row => String(row[colIndex]).length)
    ));
  
    matrix.forEach(row => {
        let rowStr = '';
        row.forEach((cell, colIndex) => {
            const formattedCell = String(cell).padStart(columnWidths[colIndex]);
            rowStr += formattedCell + '  '; 
        });
      
        console.log(rowStr);
    });
}
 
function generateRandomInteger(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min)
}
 
function generateRandomMatrix(size) {
    let matrix = Array(size).fill(0).map(()=>new Array(size).fill(0));
     
    for (let i = 0; i < size; i++) {
        for (let j = 0; j < size; j++) {
            matrix[i][j] = generateRandomInteger(1, 100);
        }
    }
    return matrix;
}
 
const matrix = generateRandomMatrix(20);
 
printAlignedMatrix(matrix); 
 
 
 
/*
run:
 
18  92   92  16  62  65   57  60   80  92   9  95   86  15   9  63  35  42  51  25  
53  18   94  79  47   5   48  78    5   4  98  86   10  29  79  34  32  35  18  38  
78  89   43  27  60  42    5  69   23   5  17  96   37  47  82  14  32  24  58  44  
38  97   71  59  39  14   30  24   84  72  60  88    4   4  23  22  58  35  18  15  
27  88  100  77  19  51   58  52   21  20  41  23   18  96  20  85  50  88  42  62  
83  89    5  77  33  70   25  90   63  66  46  83  100  88  11  99  49  32  37   4  
50  84   71  58  86  53   30  79   77  14  76  65   27  76  67  37  91  97  43  35  
12  66    1  24  80  20   94  40   49  74  21  71   21  31  39  96  53   5  67  71  
59  15   64  99   1  46   24  76   93  22  55  83   83  68  17  23  33  98  86  92  
98  25   97  37  15  68   97  40   83  46   6   5   49  81  69  43  57  60  48  28  
67  72   84  52  92  17   28  86   32  62   9  34   48  24   1  55  76  92  53   9  
77  23   77  73  96  12   63  41  100   5  67  14    2  82  26  88  68  88   2  91  
73   5   17  17  36  29  100  52   38  81   1  41    8  54  69  21  29  33  36  63  
35  96   86   7   1  10    1  61   47  79  70  83   67  61  83  36  26  20  23  89  
89  18   67  32  12  93   80  88   61  28  45  47   36  21  45  15  86  16  99  38  
41  85   90  83  74  54   83   9   95  77  97   8   65  36  11  22  39  24  93  16  
64  68   39  74  71  80   51  47   58   8  42  17   18  84  13  33  63  10  10  10  
78  60   15  27  49  60   12  37   57  73  65  21   60  79  49  45  50  42   5  61  
 5  58   40  15  17  48   26  50   58  73  20  62   63  85  47  70  15  71  67   8  
 
*/

 



answered Nov 3, 2023 by avibootz
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