Java - 列多数组中的最大数字

Question

看来我在以下代码中超出了范围(请参阅带有注释的行)，并且我似乎无法解决问题。我在这里忽略或忘记了什么吗？

int[][] num = {   {10,2,5},
                  {5,1,0},
                  {25,35,16,20,19},
                  {26,27,100} };

for (int col = 0; col < num.length; col++) {
    int highest = Integer.MIN_VALUE;
    for (int row = 0; row < num[col].length + 1; row++)
        if (num[row][col] > highest) //this is where I get the error.
            highest = num[row][col];
    System.out.println( "Highest number in column " + col + " = " + highest);
}

Answer 1

// Ok, first find the longest row:
int longest = Integer.MIN_VALUE;
for (int[] row : num) {
    longest = Math.max(longest, row.length);
}

// then, create an array to store max column values:
int[] rowHigh = new int[longest];
for (int i = 0; i < longest; i++) {
    rowHigh[i] = Integer.MIN_VALUE;
}

// then iterate over initial array to find max values of each column
for (int[] row : num) {
    for (int i = 0; i < row.length; i++) {
        rowHigh[i] = Math.max(rowHigh[i], row[i]);
    }
}