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Commit 9e50dd5

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Add: Transpose Matrix
1 parent 822b165 commit 9e50dd5

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2 files changed

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Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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package transpose_matrix
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func transpose(A [][]int) [][]int {
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m, n := len(A[0]), len(A)
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B := make([][]int, m)
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for i := 0; i < m; i++ {
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B[i] = make([]int, n)
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}
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for i, row := range A {
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for j, v := range row {
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B[j][i] = v
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}
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}
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return B
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}
Lines changed: 44 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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package transpose_matrix
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import (
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"reflect"
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"testing"
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)
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type caseType struct {
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input [][]int
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expected [][]int
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}
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func TestTranspose(t *testing.T) {
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tests := [...]caseType{
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{
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input: [][]int{
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{1, 2, 3},
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{4, 5, 6},
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{7, 8, 9},
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},
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expected: [][]int{
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{1, 4, 7},
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{2, 5, 8},
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{3, 6, 9},
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},
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},
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{
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input: [][]int{
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{1, 2, 3},
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{4, 5, 6},
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},
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expected: [][]int{
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{1, 4},
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{2, 5},
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{3, 6},
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},
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},
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}
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for _, tc := range tests {
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output := transpose(tc.input)
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if !reflect.DeepEqual(output, tc.expected) {
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t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)
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}
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}
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}

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