Devise a formula inside a loop for x and y to satisfy these requirements
Given the following requirements, devise a formula to find x and y as given below

    given:  length1   length2, assume length1 >= length2
    total = length1 + length2
    
    
    i = 0                : x = 0,          y = 0
    i = 1                : x = 0,          y = 1
    ...
    i = length2 -1       : x = 0,          y = length2 -1
    i = total-length1    : x = 0,          y = 0
    i = total-length1 +1 : x = 1,          y = 0
    ...
    i = length1 + length2: x = length1 -1, y = 0


So in code, it would look something like:

    
    int length1 = //given
    int length2 = //given
    int total = length1 + length2;
    for (int i = 0; i < total; i++) {
        x = ?  //answer here
        y = ?  //answer here
    }

Here is an example when length1 = 5; length2 =4

     i   x,y
    ---------
    i=0  0,0 
    i=1  0,1  
    i=2  0,2
    i=3  0,3
    i=4  0,0
    i=5  1,0  
    i=6  2,0  
    i=7  3,0  
    i=8  4,0


Devise a formula inside a loop for x and y to satisfy these requirements
===

Given the following requirements, devise a formula to find x and y as given below

    given:  length1   length2, assume length1 >= length2
    total = length1 + length2
    
    
    i = 0                : x = 0,          y = 0
    i = 1                : x = 0,          y = 1
    ...
    i = length2 -1       : x = 0,          y = length2 -1
    i = total-length1    : x = 0,          y = 0
    i = total-length1 +1 : x = 1,          y = 0
    ...
    i = length1 + length2: x = length1 -1, y = 0


So in code, it would look something like:

    
    int length1 = //given
    int length2 = //given
    int total = length1 + length2;
    for (int i = 0; i < total; i++) {
        x = ?  //answer here
        y = ?  //answer here
    }

Here is an example when length1 = 5; length2 =4

     i   x,y
    ---------
    i=0  0,0 
    i=1  0,1  
    i=2  0,2
    i=3  0,3
    i=4  0,0
    i=5  1,0  
    i=6  2,0  
    i=7  3,0  
    i=8  4,0

