The kdtree java. . . . A sql optimization, reduce the number of backtracking, the home less execution time

acmkdtree
.........\.classpath
.........\.project
.........\.settings
.........\.........\org.eclipse.jdt.core.prefs
.........\bin
.........\...\KDTree$Bijiao.class
.........\...\KDTree$KPoint.class
.........\...\KDTree$Node.class
.........\...\KDTree$RNode.class
.........\...\KDTree.class
.........\...\LeftThreadTree$Node.class
.........\...\LeftThreadTree.class
.........\...\Main.class
.........\src
.........\...\Main.java
.........\test.in
.........\test.in.bak
.........\test.out

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