用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 E[SV*1)
插入排序: Gk{
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package org.rut.util.algorithm.support; *b$z6.
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import org.rut.util.algorithm.SortUtil; o1fyNzq<
/** LU-#=1Q
* @author treeroot k7z(Gbzu
* @since 2006-2-2 lU&`r:1>_
* @version 1.0 "@c';".|
*/ gt2>nTJz.Z
public class InsertSort implements SortUtil.Sort{ eEZ|nEU
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/* (non-Javadoc) afxj[;p!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zxk??0]/
*/ %4|n-`:
public void sort(int[] data) { _'?8s6 H
int temp; RT.wTJS;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WU+Jo@]y
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冒泡排序: 'T&=$9g7
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package org.rut.util.algorithm.support; P+*rWJ8gQ
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import org.rut.util.algorithm.SortUtil; ?1-n\ka
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/** Y\z^\k
* @author treeroot ,p[\fT($]
* @since 2006-2-2 nJ'>#9~a'>
* @version 1.0 VurP1@e&
*/ `&|l;zsS
public class BubbleSort implements SortUtil.Sort{ (/9.+V_
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/* (non-Javadoc) 4y]: Gqz~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'b=eC
*/ <tu[cA>
public void sort(int[] data) { '?vgp
int temp; T>%uRK$
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0%A(dJA6
if(data[j] SortUtil.swap(data,j,j-1); ;EE&~&*w
} wB1|r{
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} K=!ZI/+ju
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选择排序: uDy>xJ|
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package org.rut.util.algorithm.support; m>Z\
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import org.rut.util.algorithm.SortUtil; ig.6[5a\
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/** LAK-!!0X
* @author treeroot @??c<]9F
* @since 2006-2-2 }0Kqy;
* @version 1.0 },n,P&M\`
*/ ard3yNQt
public class SelectionSort implements SortUtil.Sort { 'n>3`1E,
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/* [FAOp@7W
* (non-Javadoc) u]]5p[|S
* [)J49
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vlp*'2VO
*/ L?D~~Jb
public void sort(int[] data) { iZkW+5(
int temp; ;)=zvr17
for (int i = 0; i < data.length; i++) { |4p<T!T
int lowIndex = i; X#Dhk6
for (int j = data.length - 1; j > i; j--) { ?,i#B'Z^
if (data[j] < data[lowIndex]) { sS1J.R
lowIndex = j; o7@4=m}
} 9
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SortUtil.swap(data,i,lowIndex); nuQLq^e
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} @E"+qPp.3
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} cO=UswIkwO
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Shell排序: TgQ|T57
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package org.rut.util.algorithm.support; N?mY|x\}wK
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import org.rut.util.algorithm.SortUtil; Q,,fDBN
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/** ]/VIff
* @author treeroot V=l Q}sBY
* @since 2006-2-2 Lm*LJ_+ B
* @version 1.0 53u.pc
*/ [Tb3z:UUvf
public class ShellSort implements SortUtil.Sort{ tEWj}rX
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/* (non-Javadoc) R/Dy05nloe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (g)lv)4P
*/ G|PIH#
public void sort(int[] data) { R0YC:rAt
for(int i=data.length/2;i>2;i/=2){ Dho^^<`c+
for(int j=0;j insertSort(data,j,i); /4-eoTxy
} c@o/Cv
} /P8eI3R
insertSort(data,0,1); EhP&L?EL
} Bn#HJ17/#
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/** r/q1&*T
* @param data cV,03]x
* @param j YZ%f7BUk
* @param i fssL'DD
*/ 4KSP81}/\
private void insertSort(int[] data, int start, int inc) { $OFFH[_z
int temp; XUqE5[O%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); s<r.+zqW
}
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} |_xiG~
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} IrwF
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快速排序: :jKXKY+T
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package org.rut.util.algorithm.support; M4hN#0("4
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import org.rut.util.algorithm.SortUtil; ubC JZ"!
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/** 7quwc'!
* @author treeroot r+#V{oE_
* @since 2006-2-2 = cI\OsV&?
* @version 1.0 Y`O}]*{>8R
*/ Y)j,(9
public class QuickSort implements SortUtil.Sort{ k}0
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/* (non-Javadoc) +$m skj0s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]MA)='~
*/ bQN4ozSi
public void sort(int[] data) { f+*2K^B
quickSort(data,0,data.length-1); O"-PNF,J
} _467~5JkU
private void quickSort(int[] data,int i,int j){ &\]f!'jV
int pivotIndex=(i+j)/2; \=G
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SortUtil.swap(data,pivotIndex,j); U/&qV"Ih
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int k=partition(data,i-1,j,data[j]); ]zMBZs
SortUtil.swap(data,k,j); \7tvNa,C
if((k-i)>1) quickSort(data,i,k-1); k&"qdB(I
if((j-k)>1) quickSort(data,k+1,j); 7/OOq=z
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}
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/** k#r7&Y
* @param data rnBeL _8 C
* @param i 4a \+o]
* @param j /G{3p&9
* @return y $DB
*/ Umwg
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private int partition(int[] data, int l, int r,int pivot) { ; o@`l$O
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); ~V-
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} |v'5*n9
while(l SortUtil.swap(data,l,r); +p}Xmn
return l; oJu4vGy0
} r~Ubgd ]U
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} ]:#$6D"
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改进后的快速排序: kuud0VWJ
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package org.rut.util.algorithm.support; BH*]OXW\
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import org.rut.util.algorithm.SortUtil; sF3
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/** l3|>*szX
* @author treeroot MmX[xk
* @since 2006-2-2 R]sjG<
* @version 1.0 GQ)cUrXQz
*/ <:7e4#
public class ImprovedQuickSort implements SortUtil.Sort { ;3}b&Z[N]
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private static int MAX_STACK_SIZE=4096; Fl>j5[kLZ
private static int THRESHOLD=10;
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/* (non-Javadoc) qq%_ksQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^[z\KmUqt
*/ r$eL-jQmn
public void sort(int[] data) { |w]i$`3'I
int[] stack=new int[MAX_STACK_SIZE]; &ziB#(&:H
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int top=-1; `/Jr8J_
int pivot; "lzg@=$|)
int pivotIndex,l,r; 5e8-?w%e
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stack[++top]=0; AezXou&
stack[++top]=data.length-1; ?iO^b.'I#
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while(top>0){ rtOW-cz
int j=stack[top--]; p
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int i=stack[top--]; Y tj>U
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pivotIndex=(i+j)/2; 2xBGs9_Y
pivot=data[pivotIndex]; JJOs
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SortUtil.swap(data,pivotIndex,j); 2qR@:^
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >'g60 R[
SortUtil.swap(data,l,r); #!j&L6
} S?WUSx*N
while(l SortUtil.swap(data,l,r); jXva?_
SortUtil.swap(data,l,j); gz:c_HJ
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if((l-i)>THRESHOLD){ NPq2C8:
stack[++top]=i; oYm"NDS_.
stack[++top]=l-1; hrxASAfg6
} iU|C<A%Hh
if((j-l)>THRESHOLD){ *Y>'v%
stack[++top]=l+1; $jL.TraV7
stack[++top]=j; uty]-k
} L)"w-,zy
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} _\]UA?0
file://new InsertSort().sort(data); cl8Mv
insertSort(data); w8zQDPVB%
} :{i mRa-
/** #f@53Pxb
* @param data sAj$U^Gp
*/ 1x8]&
private void insertSort(int[] data) { :udZfA\sW
int temp; "q8'tN><