java - How to add a value to a specific row in a 2d array -


i trying number user input row number of 2d array existed , number value needs added elements of row. have no idea how it. please me , give me idea start.

so example if have 2d array , content is:

2 3 4 5 1

2 6 2 5 6

4 2 6 2 1

i know how numbers user input , locate row don't know how add second number elements of row.

for example:

  • if user inputs 0 row number.
  • we got 2 3 4 5 1 located.
  • then user inputs 2 value of addition.

i need 2+2 3+2 4+2 5+2 1+2 , save row 0 2d array. how can it?

if you're stuck on 2d array syntax, it's this:

myarray[0][0] = myarray[0][0] + 2; myarray[0][1] = myarray[0][1] + 2; myarray[0][2] = myarray[0][2] + 2; myarray[0][3] = myarray[0][3] + 2; myarray[0][4] = myarray[0][4] + 2;

or more concisely:

for (int i=0, length=myarray[0].length; i<length; i++) {     myarray[0][i] += 2; }

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