inc.py

# matricies that increase from left to right and top to bottom

import random
import math

def matrix(width, max_increase=3, max_seed=10):
    """
    width: matrix width > 0
    max_increase: the maximum increase between a cell and its lower / right
    neighbors
    max_seed: maximum value for the top left element
    """
    if width <= 0:
        raise ValueError('width must be > 0')
    increase = lambda: random.randint(1, max_increase)
    mat = [[0 for x in range(width)] for x in range(width)]
    mat[0][0] = random.randint(0, max_seed)
    for x in range(1, width):
        mat[x][0] = mat[x - 1][0] + increase()
        mat[0][x] = mat[0][x - 1] + increase()

    for x in range(1, width):
        for y in range(1, width):
            mat[x][y] = max(mat[x - 1][y], mat[x][y - 1]) + increase()
    return mat

def smatrix(mat):
    largest = max(max(mat))
    width = math.ceil(math.log10(largest))
    fmt = str(width)
    ret = []
    for x in range(len(mat)):
        ret.append('[')
        row = []
        for y in range(len(mat[x])):
            row.append(format(mat[x][y], fmt))
        ret.append(', '.join(row))
        ret.append(']\n')
    return ''.join(ret);

def smatrix_java(mat):
    largest = max(max(mat))
    width = math.ceil(math.log10(largest))
    fmt = str(width)
    ret = []
    for x in range(len(mat)):
        row = []
        for y in range(len(mat[x])):
            row.append(format(mat[x][y], fmt))
        ret.append('{' + ', '.join(row) + '}')
    return 'int[][] matrix = new int[][] {\n\t' + ',\n\t'.join(ret) + '};'