The method of storing C-language arrays in memory. (Fortran arrays are stored in column-major order.) Row-major order requires the rows of a two-dimensional array to be in contiguous memory locations. For example, given the array a[3][4], element a[0][0] would be stored in the first location, a[0][1] in the second, a[0][2] in the third, and so on.

The default storage method for array s in C. Memory representation is such that the rows of an array are stored contiguously. For example, given the array a[3][2], the element a[0][0] would be stored in the first location, element a[0][1] in the second location, element a[1][0] in the third location, and so on. See also column-major order.

A sequencing method used for storing multidimensional arrays according to the subscripts of the array elements. In this method the rightmost subscript position varies most rapidly and completes a full cycle before the next subscript position to the left is incremented.

A way of storing array elements such that the rightmost subscript varies most rapidly as memory-adjacent elements are accessed.

In computing, row-major order and column-major order describe methods for storing multidimensional arrays in linear memory. Array order is critical for correctly passing arrays between programs written in different languages. It is also important for performance when traversing an array because accessing an array in the same order the elements appear in memory (memory coherency) is generally faster than accessing the elements out of order.