31 lines
592 B
Go
31 lines
592 B
Go
package main
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func mask(str string) int {
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mask := 0
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for _, r := range str {
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mask |= 1 << (r - 'a')
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}
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return mask
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}
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func findNumOfValidWords(words []string, puzzles []string) []int {
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word_masks := make(map[int]int)
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for _, word := range words {
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mask := mask(word)
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word_masks[mask] += 1
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}
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out := make([]int, len(puzzles))
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for pi, puzzle := range puzzles {
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pc := mask(puzzle[1:])
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fc := 1 << (puzzle[0] - 'a')
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count, submask := word_masks[fc], pc
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for submask != 0 {
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count += word_masks[submask|fc]
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submask = (submask - 1) & pc
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}
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out[pi] = count
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}
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return out
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}
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