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21 lines
401 B
21 lines
401 B
5 years ago
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package solutions
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//Returns the element of the slice that doesn't have a correspondant pair
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func Unmatch(arr []int) int {
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//count the number of repetitions of each value
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var quant int
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for _, el := range arr {
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quant = 0
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for _, v := range arr {
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if v == el {
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quant++
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}
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}
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//if the number of repetitions is odd return that element
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if quant%2 != 0 {
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return el
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}
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}
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return -1
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}
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