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| def nearly_equal(str1, str2): | |
| m, n = len(str1) + 1, len(str2) + 1 | |
| string_table = {} | |
| for i in range(m): | |
| string_table[i, 0] = i | |
| for j in range(n): | |
| string_table[0, j] = j | |
| for i in range(1, m): | |
| for j in range(1, n): | |
| if str1[i-1] == str2[j-1]: | |
| counter = 0 | |
| else: | |
| counter = 1 | |
| string_table[i, j] = min(string_table[i, j - 1] + 1, | |
| string_table[i - 1, j] + 1, | |
| string_table[i - 1, j - 1] + counter) | |
| return string_table[i, j] == 1 | |
| def test_sample_1(): | |
| assert nearly_equal('python', 'jython') == True | |
| def test_sample_2(): | |
| assert nearly_equal('man', 'woman') == False | |
| def test_sample_3(): | |
| assert nearly_equal('cherry', 'berry') == False |
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