// sorted by the routines in this package. The methods require that the // elements of the collection be enumerated by an integer index. type Interface interface { // Len is the number of elements in the collection. Len() int // Less reports whether the element with // index i should sort before the element with index j. Less(i, j int) bool // Swap swaps the elements with indexes i and j. Swap(i, j int) }
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