mirror of
https://github.com/rjNemo/underscore
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Ruidy
4f02db2da7
- Add Intersperse: inserts separator between each element - Pre-allocated for optimal performance - Comprehensive tests including edge cases - Benchmark included Example: Intersperse([1,2,3], 0) → [1,0,2,0,3] Resolves Issue 18 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude <noreply@anthropic.com>
23 lines
640 B
Go
23 lines
640 B
Go
package underscore
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// Intersperse inserts a separator between each element of the slice.
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// Returns an empty slice if the input is empty.
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// Returns the original element if the input has only one element.
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//
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// Example: Intersperse([]int{1,2,3}, 0) → [1, 0, 2, 0, 3]
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func Intersperse[T any](values []T, separator T) []T {
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if len(values) == 0 {
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return []T{}
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}
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if len(values) == 1 {
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return []T{values[0]}
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}
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// Result will have len(values) + (len(values)-1) elements
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res := make([]T, 0, len(values)*2-1)
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res = append(res, values[0])
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for i := 1; i < len(values); i++ {
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res = append(res, separator, values[i])
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}
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return res
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}
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