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June 3, 2022 11:38
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Top K Frequent Elements - LeetCode 347
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func topKFrequent(nums []int, k int) []int { | |
freqMap := make(map[int]int) | |
for _, n := range nums { | |
freqMap[n]++ | |
} | |
freqArr := make([][]int, len(nums)+1) | |
for k, v := range freqMap { | |
freqArr[v] = append(freqArr[v], k) | |
} | |
var result []int | |
freqArrLen := len(freqArr) | |
for i := freqArrLen-1; i > -1 && k > 0; i-- { | |
for _, n := range freqArr[i] { | |
result = append(result, n) | |
k-- | |
if k == 0 { | |
return result | |
} | |
} | |
} | |
return result | |
} |
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