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  • Leetcode 17. 电话号码的字母组合2022-05-09 23:00:37

    17. 电话号码的字母组合 - 力扣(LeetCode)     思路 回溯法   func letterCombinations(digits string) []string { if len(digits) == 0 || len(digits) > 4 { return nil } strMap := [10]string{ "", "", "abc", "def", &quo

  • Java常用2022-03-05 01:04:46

    import com.sun.jmx.remote.internal.ArrayQueue; import org.junit.Test; import java.util.*; import java.util.function.Supplier; import java.util.stream.Collectors; public class KS20220107_1 { public static void main(String[] args) { // Stack Deque&l

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