{"header":{"message":"go: pythagorean: pass test on exercism.org, little tweaks here and there","description":null,"timestamp":"2021-09-19T12:40:44.612209256Z","authors":[{}]},"hash":"3YL5F3GP4G2E2KDK2IJ2BA5S75YEW34P7BAKTNZZHXZRJHT2CNPQC","authors":[{"login":"voroskoi","key":"Guf8VYJNUiWAqxwLxDSKxmvvtY65ht2zK2q4h6VhxrcZ"}],"deps":{"hashes":[["3YL5F3GP4G2E2KDK2IJ2BA5S75YEW34P7BAKTNZZHXZRJHT2CNPQC","go: pythagorean: pass test on exercism.org, little tweaks here and there"],["AA",null],["H3HDA6Q5UBXDO7V5M7HCDKKTCDEQBWOLSMTXMMYGXUQWZDXKJMZAC","Pythagorean_triple: cosmetics"],["DMUTID5VASWBATICSCGHVALEYIBBG2EAIX3WUGHIVOAYGARYYYJQC","pythagorean_triplets: dickson: pregenerate factors to make it faster"],["MRAK5MHOSG2NF7X2KPREGEPO3DYRAAMU34DH6M55RBERSCVIQPAAC","pythagorean_triplet: dickson: pregenerate factors to make it faster"],["QIYILOHTZODUXKHKL3EJ5OOENGG744446P7BLNRIK5NDCJHPG7SQC","Pijul version bump garbage"],["NT7TIKSQWJS7N25MYX6O7QKCN6TPHK6ZMZW4NSUIKM5RHWF7OJBAC","Pythagorean_triple: 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!reflect.DeepEqual(ts, test.ts) {\n\t\t\tt.Fatalf(\"Range(%d, %d) = %v, want %v\",\n\t\t\t\ttest.min, test.max, ts, test.ts)\n\t\t}\n\t}\n}\n\nvar sumTests = []struct {\n\tsum int\n\tts []pythagorean.Triplet\n}{\n\t{180, []pythagorean.Triplet{{18, 80, 82}, {30, 72, 78}, {45, 60, 75}}},\n\t{1000, []pythagorean.Triplet{{200, 375, 425}}},\n}\n\nfunc TestSum(t *testing.T) {\n\tfor _, test := range sumTests {\n"},{"Del":"\t\tts := trivial.Sum(test.sum)\n"},{"Del":"\t\tif !reflect.DeepEqual(ts, test.ts) {\n\t\t\tt.Fatalf(\"Sum(%d) = %v, want %v\",\n\t\t\t\ttest.sum, ts, test.ts)\n\t\t}\n\t}\n}\n\nfunc BenchmarkRange(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n"},{"Del":"\t\ttrivial.Range(1, 100)\n"},{"Del":"\t}\n}\n\nfunc BenchmarkSum(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n"},{"Del":"\t\ttrivial.Sum(1000)\n"},{"Del":"\t}\n}\n"},{"Del":"\t\"pythagorean/trivial\"\n"}]}},{"FileDel":{"deleted_names":[{"basename":"euclid_test.go","metadata":420},{"basename":"euclid_test.go","metadata":0}],"del":{"EdgeMap":{"edges":[{"previous":"BLOCK | FOLDER | DELETED","flag":"BLOCK | FOLDER | DELETED","from":{"change":6,"pos":9},"to":{"change":6,"start":10,"end":26},"introduced_by":5},{"previous":"BLOCK | FOLDER","flag":"BLOCK | FOLDER | DELETED","from":{"change":6,"pos":26},"to":{"change":6,"start":27,"end":27},"introduced_by":6},{"previous":"BLOCK | FOLDER","flag":"BLOCK | FOLDER | DELETED","from":{"change":6,"pos":9},"to":{"change":5,"start":1470,"end":1495},"introduced_by":5},{"previous":"BLOCK | FOLDER","flag":"BLOCK | FOLDER | DELETED","from":{"change":5,"pos":1495},"to":{"change":6,"start":27,"end":27},"introduced_by":5}],"inode":{"change":6,"pos":27}}},"content_edges":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":27},"to":{"change":6,"start":28,"end":1113},"introduced_by":6}],"inode":{"change":6,"pos":27}},"content":[{"Del":"package euclid_test\n\nimport (\n\t\"pythagorean\"\n\t\"pythagorean/euclid\"\n\t\"reflect\"\n\t\"testing\"\n)\n\nvar rangeTests = []struct {\n\tmin, max int\n\tts []pythagorean.Triplet\n}{\n\t{1, 10, []pythagorean.Triplet{{3, 4, 5}, {6, 8, 10}}},\n\t{11, 20, []pythagorean.Triplet{{12, 16, 20}}},\n}\n\nfunc TestRange(t *testing.T) {\n\tfor _, test := range rangeTests {\n\t\tts := euclid.Range(test.min, test.max)\n\t\tif !reflect.DeepEqual(ts, test.ts) {\n\t\t\tt.Fatalf(\"Range(%d, %d) = %v, want %v\",\n\t\t\t\ttest.min, test.max, ts, test.ts)\n\t\t}\n\t}\n}\n\nvar sumTests = []struct {\n\tsum int\n\tts []pythagorean.Triplet\n}{\n\t{180, []pythagorean.Triplet{{18, 80, 82}, {30, 72, 78}, {45, 60, 75}}},\n\t{1000, []pythagorean.Triplet{{200, 375, 425}}},\n}\n\nfunc TestSum(t *testing.T) {\n\tfor _, test := range sumTests {\n\t\tts := euclid.Sum(test.sum)\n\t\tif !reflect.DeepEqual(ts, test.ts) {\n\t\t\tt.Fatalf(\"Sum(%d) = %v, want %v\",\n\t\t\t\ttest.sum, ts, test.ts)\n\t\t}\n\t}\n}\n\nfunc BenchmarkRange(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n\t\teuclid.Range(1, 100)\n\t}\n}\n\nfunc BenchmarkSum(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n\t\teuclid.Sum(1000)\n\t}\n}\n"}]}},{"Replacement":{"inode":{"change":6,"pos":1126},"path":"go/pythagorean-triplet/euclid/euclid.go","line":11,"ins":{"up_context":[{"change":6,"pos":1380}],"down_context":[{"change":2,"pos":47}],"flag":"BLOCK","start":0,"end":43,"inode":{"change":6,"pos":1126}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1380},"to":{"change":2,"start":0,"end":47},"introduced_by":2}],"inode":{"change":6,"pos":1126}},"ins_contents":[{"Add":"\ttrp := map[pythagorean.Triplet]struct{}{}"}],"del_contents":[{"Del":"\ttrp := make(map[pythagorean.Triplet]struct{})\n"}]}},{"Replacement":{"inode":{"change":6,"pos":1126},"path":"go/pythagorean-triplet/euclid/euclid.go","line":26,"ins":{"up_context":[{"change":6,"pos":1966}],"down_context":[{"change":2,"pos":302}],"flag":"BLOCK","start":44,"end":124,"inode":{"change":6,"pos":1126}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1966},"to":{"change":6,"start":1966,"end":2051},"introduced_by":6}],"inode":{"change":6,"pos":1126}},"ins_contents":[{"Add":"\t\t\t\t\t// this only counts unique triplets // https://stackoverflow.com/a/9251352"}],"del_contents":[{"Del":"\t\t\t\t\t// this only counts unique triplets\n\t\t\t\t\t// https://stackoverflow.com/a/9251352\n"}]}},{"Edit":{"inode":{"change":6,"pos":1126},"path":"go/pythagorean-triplet/euclid/euclid.go","line":32,"atom":{"NewVertex":{"up_context":[{"change":6,"pos":2206}],"down_context":[{"change":2,"pos":367}],"flag":"BLOCK","start":125,"end":158,"inode":{"change":6,"pos":1126}}},"contents":[{"Add":""},{"Add":"\t// we have to sort the results"}]}},{"FileDel":{"deleted_names":[{"basename":"dickson_test.go","metadata":420},{"basename":"dickson_test.go","metadata":0}],"del":{"EdgeMap":{"edges":[{"previous":"BLOCK | FOLDER | DELETED","flag":"BLOCK | FOLDER | DELETED","from":{"change":6,"pos":10},"to":{"change":6,"start":11,"end":28},"introduced_by":5},{"previous":"BLOCK | FOLDER","flag":"BLOCK | FOLDER | DELETED","from":{"change":6,"pos":28},"to":{"change":6,"start":29,"end":29},"introduced_by":6},{"previous":"BLOCK | FOLDER","flag":"BLOCK | FOLDER | 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%v\",\n\t\t\t\ttest.min, test.max, ts, test.ts)\n\t\t}\n\t}\n}\n\nvar sumTests = []struct {\n\tsum int\n\tts []pythagorean.Triplet\n}{\n\t{180, []pythagorean.Triplet{{18, 80, 82}, {30, 72, 78}, {45, 60, 75}}},\n\t{1000, []pythagorean.Triplet{{200, 375, 425}}},\n}\n\nfunc TestSum(t *testing.T) {\n\tfor _, test := range sumTests {\n\t\tts := dickson.Sum(test.sum)\n\t\tif !reflect.DeepEqual(ts, test.ts) {\n\t\t\tt.Fatalf(\"Sum(%d) = %v, want %v\",\n\t\t\t\ttest.sum, ts, test.ts)\n\t\t}\n\t}\n}\n\nfunc BenchmarkRange(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n\t\tdickson.Range(1, 100)\n\t}\n}\n\nfunc BenchmarkSum(b *testing.B) {\n\tfor i := 0; i < b.N; i++ {\n\t\tdickson.Sum(1000)\n\t}\n}\n"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":8,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1348},"to":{"change":3,"start":0,"end":27},"introduced_by":3}],"inode":{"change":6,"pos":1135}}},"contents":[{"Del":"\nconst MAX = 500 * 500 / 8\n"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":9,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":1}],"down_context":[{"change":4,"pos":1}],"flag":"BLOCK","start":159,"end":250,"inode":{"change":6,"pos":1135}}},"contents":[{"Add":"// MAX is arbitrary to pass tests. This solution precalculates factors so obviously faster"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":11,"atom":{"EdgeMap":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":18},"to":{"change":6,"start":1348,"end":1349},"introduced_by":4},{"previous":"","flag":"DELETED","from":{"change":3,"pos":27},"to":{"change":6,"start":1348,"end":1349},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1348},"to":{"change":6,"start":1348,"end":1349},"introduced_by":6},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1349},"to":{"change":3,"start":28,"end":58},"introduced_by":3}],"inode":{"change":6,"pos":1135}}},"contents":[{"Del":"\n"},{"Del":"var factors = genFactors(MAX)\n"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":12,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1349},"to":{"change":4,"start":19,"end":73},"introduced_by":4}],"inode":{"change":6,"pos":1135}}},"contents":[{"Del":"var factors = genFactors(((MAX / 4) * (MAX / 4)) / 2)\n"}]}},{"SolveOrderConflict":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":12,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":59}],"down_context":[],"flag":"","start":251,"end":251,"inode":{"change":6,"pos":1135}}},"contents":[]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":12,"atom":{"NewVertex":{"up_context":[{"change":0,"pos":251}],"down_context":[{"change":4,"pos":73}],"flag":"BLOCK","start":252,"end":468,"inode":{"change":6,"pos":1135}}},"contents":[{"Add":"// we need the factors of r*r/2: r goes up to max/2, so (max/2)*(max/2)/2 should be enough"},{"Add":"// the last 3/4 is just bluffing, I am not aware of hard facts"},{"Add":"var factors = genFactors(((MAX / 2) * (MAX / 2)) / 2 * 3 / 4)"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":18,"atom":{"NewVertex":{"up_context":[{"change":6,"pos":1495}],"down_context":[{"change":6,"pos":1495}],"flag":"BLOCK","start":469,"end":531,"inode":{"change":6,"pos":1135}}},"contents":[{"Add":"\t// factors := genFactors((max / 2) * (max / 2) / 2 * 3 / 4)"},{"Add":""}]}},{"Replacement":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":22,"ins":{"up_context":[{"change":6,"pos":1544}],"down_context":[{"change":6,"pos":1849}],"flag":"BLOCK","start":532,"end":884,"inode":{"change":6,"pos":1135}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1544},"to":{"change":6,"start":1544,"end":1596},"introduced_by":6},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1596},"to":{"change":3,"start":60,"end":88},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1596},"to":{"change":4,"start":75,"end":103},"introduced_by":4},{"previous":"","flag":"DELETED","from":{"change":3,"pos":88},"to":{"change":6,"start":1628,"end":1849},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":4,"pos":103},"to":{"change":6,"start":1628,"end":1849},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1628},"to":{"change":6,"start":1628,"end":1849},"introduced_by":6}],"inode":{"change":6,"pos":1135}},"ins_contents":[{"Add":""},{"Add":"\t// r is an _even_ integer, t and s are the factors of r*r/2"},{"Add":"\tfor r := 2; r < max/2 && c < max; r = r + 2 {"},{"Add":"\t\tfact := factors[(r*r)/2]"},{"Add":"\t\tfor i := 0; i < len(fact)/2; i++ {"},{"Add":"\t\t\ts := fact[i]"},{"Add":"\t\t\tt := (r * r) / 2 / s // r*r = 2*s*t"},{"Add":"\t\t\ta = r + s"},{"Add":"\t\t\tb = r + t"},{"Add":"\t\t\tc = r + s + t"},{"Add":"\t\t\tif a >= min && c <= max {"},{"Add":"\t\t\t\tret = append(ret, pythagorean.Triplet{a, b, c})"}],"del_contents":[{"Del":"\tfor c < max {\n\t\tfor r := 2; r < max/2; r = r + 2 {\n"},{"Del":"\t\t\tfact := factors[(r*r)/2]\n"},{"Del":"\t\t\tfact := factors[(r*r)/2]\n"},{"Del":"\t\t\tfor i := 0; i < len(fact)/2; i++ {\n\t\t\t\ts := fact[i]\n\t\t\t\tt := (r * r) / 2 / fact[i]\n\t\t\t\ta = r + s\n\t\t\t\tb = r + t\n\t\t\t\tc = r + s + t\n\t\t\t\tif a >= min && c <= max {\n\t\t\t\t\tret = append(ret, pythagorean.Triplet{a, b, c})\n\t\t\t\t}\n"}]}},{"Replacement":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":41,"ins":{"up_context":[{"change":3,"pos":167}],"down_context":[{"change":3,"pos":243}],"flag":"BLOCK","start":885,"end":954,"inode":{"change":6,"pos":1135}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":167},"to":{"change":3,"start":167,"end":243},"introduced_by":3}],"inode":{"change":6,"pos":1135}},"ins_contents":[{"Add":"func genFactors(max int) [][]int {"},{"Add":"\tvar factors = make([][]int, max)"}],"del_contents":[{"Del":"func genFactors(max int) map[int][]int {\n\tvar factors = make(map[int][]int)\n"}]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":46,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":1876},"to":{"change":4,"start":104,"end":356},"introduced_by":4}],"inode":{"change":6,"pos":1135}}},"contents":[{"Del":"// https://www.geeksforgeeks.org/find-all-divisors-of-first-n-natural-numbers\nfunc genFactors(max int) map[int][]int {\n\tvar factors = make(map[int][]int)\n\tfor i := 1; i < max; i++ {\n\t\tfor j := i; j < max; j += i {\n\t\t\tfactors[j] = append(factors[j], i)\n"}]}},{"SolveOrderConflict":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":46,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":341}],"down_context":[{"change":6,"pos":2010}],"flag":"","start":955,"end":955,"inode":{"change":6,"pos":1135}}},"contents":[]}},{"Edit":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":49,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":6,"pos":2017},"to":{"change":4,"start":357,"end":373},"introduced_by":4}],"inode":{"change":6,"pos":1135}}},"contents":[{"Del":"\treturn factors\n"}]}},{"SolveOrderConflict":{"inode":{"change":6,"pos":1135},"path":"go/pythagorean-triplet/dickson/dickson.go","line":49,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":358}],"down_context":[{"change":6,"pos":2064}],"flag":"","start":956,"end":956,"inode":{"change":6,"pos":1135}}},"contents":[]}}],"owner":"voroskoi","repo":"exercism","token":"Ed/5b91XQaZP5HiK3dz1iQ1yg8dr4GB9A8UY6PViK0w=","login":null}

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