refactor: optimize result slice initialization in topKFrequent function

neverlish · neverlish · commit 487db4c222f5 · 2024-12-05T18:52:17.000+09:00
diff --git a/top-k-frequent-elements/neverlish.go b/top-k-frequent-elements/neverlish.go
@@ -26,7 +26,7 @@ func topKFrequent(nums []int, k int) []int {
 		freq_by_counts[count] = append(freq_by_counts[count], num)
 	}
 
-	result := []int{}
+	result := make([]int, 0, k)
 
 	for count := len(nums); count > 0; count-- {
 		if nums, ok := freq_by_counts[count]; ok {

Original file line number	Diff line number	Diff line change
`@@ -26,7 +26,7 @@ func topKFrequent(nums []int, k int) []int {`
`26`	`26`	`freq_by_counts[count] = append(freq_by_counts[count], num)`
`27`	`27`	`}`
`28`	`28`
`29`		`- result := []int{}`
	`29`	`+ result := make([]int, 0, k)`
`30`	`30`
`31`	`31`	`for count := len(nums); count > 0; count-- {`
`32`	`32`	`if nums, ok := freq_by_counts[count]; ok {`