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。 n .!Ym
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插入排序: b 1&i# I?{
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package org.rut.util.algorithm.support; GDYFU*0
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import org.rut.util.algorithm.SortUtil; LqdY Qd51
/** /-6S{hl9Ne
* @author treeroot bYz&P`o}
* @since 2006-2-2 Qu,8t8
* @version 1.0 T#pk]c6Q
*/ O]f/r,4@
public class InsertSort implements SortUtil.Sort{ H
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/* (non-Javadoc) 2<mW\$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H:p Z-v*
*/ @aQ1khEd
public void sort(int[] data) { +GsWTEz
int temp; #YDr%>j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dD<fn9t
} h7s;m
} yqSs,vz
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冒泡排序: Q-#$Aa
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package org.rut.util.algorithm.support; jL)WPq!m+
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import org.rut.util.algorithm.SortUtil; O4<g%.HC6
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/** v#=`%]mL
* @author treeroot (;. AS
* @since 2006-2-2 Wlh~)
* @version 1.0 $./bjV%
*/ kP xa7
public class BubbleSort implements SortUtil.Sort{ gn5)SP 8
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/* (non-Javadoc) WWT",gio
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rQTr8DYH
*/ }FF W|f
public void sort(int[] data) { E1;@=#t2i
int temp; k%[3Q>5iM
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7?OH,^
if(data[j] SortUtil.swap(data,j,j-1); ,wKe
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} >h Y"
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}
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} |%~+2m
} ( *G\g=D
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} 4[ryKPa,
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选择排序: W~_t~Vg5
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package org.rut.util.algorithm.support; 1e xl0]-
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import org.rut.util.algorithm.SortUtil; \U%#nU{
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/**
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* @author treeroot &iN--~}!$
* @since 2006-2-2 j?b\+rr
* @version 1.0 +Taa!hfys
*/ TI y&&_p
public class SelectionSort implements SortUtil.Sort { KlK`;cr?
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/* doHF|<s
* (non-Javadoc) 4Z[V uQng
* /8@m<CW2Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s?WCnT
*/ F2(q>#<_
public void sort(int[] data) { qdCWy
int temp; gPS&^EdxA
for (int i = 0; i < data.length; i++) { A`O <6
int lowIndex = i; @|bP+8oU
for (int j = data.length - 1; j > i; j--) { "Clz'J]{
if (data[j] < data[lowIndex]) { %Qn(rA@9
lowIndex = j; G@S&1=nj3
} '#\D]5
} mN0=i(H<
SortUtil.swap(data,i,lowIndex); vUQFQ
} eX&Gw{U-f
} ]TO/kl/
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} Hv#q:R8
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Shell排序: x:K?\<
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package org.rut.util.algorithm.support; mkvvNm3
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import org.rut.util.algorithm.SortUtil; 8uG0^h}
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/** t[.W$1=
* @author treeroot 'TN)Lb*
* @since 2006-2-2 1`r| op},
* @version 1.0 ]XUl@Y.
*/ A,i()R'I
public class ShellSort implements SortUtil.Sort{ {sN"(H4$
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/* (non-Javadoc) q/@dR{-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 74vmt<Q
*/ H;_yRUY9
public void sort(int[] data) { v<rF'D2
for(int i=data.length/2;i>2;i/=2){ kv|,b
for(int j=0;j insertSort(data,j,i); _45cH{$sA
} ;cP8 ?U
} &TN2 HZ-bJ
insertSort(data,0,1); , j980/
} pD`/_-=^h
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/** (*^DN{5
* @param data [$:,-Q @
* @param j tFU;SBt8Ki
* @param i D(Ix!G/
*/ B#N7qoi
private void insertSort(int[] data, int start, int inc) { T nxKR$Hoh
int temp; g,lY ut
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xe:' 8J6L
} TL-i=\{L:d
} R8sck)k'}
} }OKL
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快速排序: v4<j
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package org.rut.util.algorithm.support; O k(47nC
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import org.rut.util.algorithm.SortUtil; Z] { @H
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/** edN8-P(
* @author treeroot z[#6-T
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* @since 2006-2-2 *FPg#a+
* @version 1.0 `!Ln|_,d
*/ }MZan" cfo
public class QuickSort implements SortUtil.Sort{ ./iXyta
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/* (non-Javadoc) }u^:MI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,V2#iY.%}N
*/ nZW4} ~0j
public void sort(int[] data) { /#\?1)jCK
quickSort(data,0,data.length-1); rt;gC[3\
} F?2FITi_V
private void quickSort(int[] data,int i,int j){ 'wE\{1~_[+
int pivotIndex=(i+j)/2; `i4I!E
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SortUtil.swap(data,pivotIndex,j); #_p
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int k=partition(data,i-1,j,data[j]); /,t|
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SortUtil.swap(data,k,j); N l|^o{#
if((k-i)>1) quickSort(data,i,k-1); onh?/3l
if((j-k)>1) quickSort(data,k+1,j); e[p^p!a
]
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} Ph"iX'J
/** Ns~g+C9
* @param data !h/dZ`#
* @param i 'Z$jBL
* @param j -&7=uRQk
* @return 3DI^y`av
*/ | @q9{h7
private int partition(int[] data, int l, int r,int pivot) { V%o#AfMI_
do{ $l43>e{E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -g$OOJB6
SortUtil.swap(data,l,r); T:'+6
} X@eg<]'m
while(l SortUtil.swap(data,l,r); wK ][qZ ]
return l; m^Rd Iy)
} X%35XC.n
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} ~Cu lFxu
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改进后的快速排序: +}\29@{W
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package org.rut.util.algorithm.support; iF+S%aPd#
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import org.rut.util.algorithm.SortUtil; 0A@-9w=u
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/** Z!k5"\{0pE
* @author treeroot pO5v*oONz+
* @since 2006-2-2 ^Y#@$c
* @version 1.0 i{4'cdr?
*/ #<D@3ScC
public class ImprovedQuickSort implements SortUtil.Sort { 37,L**Dgs
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private static int MAX_STACK_SIZE=4096; dw'<" +zO
private static int THRESHOLD=10; 5~v(AB(x
/* (non-Javadoc) )R8%wk?2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *vRNG 3D/
*/ Q@ykQ
public void sort(int[] data) { 1kbT@
int[] stack=new int[MAX_STACK_SIZE]; 5@GD} oAn6
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int top=-1; `%KpTh
int pivot; \ 9[NH/.Z{
int pivotIndex,l,r; ^aGZJiyJ
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stack[++top]=0; d08`42Z69
stack[++top]=data.length-1; '-$))AdD
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while(top>0){ *%P>x}6w3
int j=stack[top--]; z }FiU[Hs
int i=stack[top--]; jh<TdvF2$
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pivotIndex=(i+j)/2; $.suu^>^w
pivot=data[pivotIndex]; +#de8/x
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SortUtil.swap(data,pivotIndex,j); *qeic e%E
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file://partition =
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r=j; 2)HxW}o
do{ Uxj<x`<1x
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1]D/3!
SortUtil.swap(data,l,r); N (:E K
} Z`SWZ<
while(l SortUtil.swap(data,l,r); X~IRpzC
SortUtil.swap(data,l,j); IS5.i95m
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if((l-i)>THRESHOLD){ $ uz1
stack[++top]=i; oP43 NN~
stack[++top]=l-1; m2-fi*Mgg
} Ti9:'I
if((j-l)>THRESHOLD){ yi
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stack[++top]=l+1; pQ[o3p!&9
stack[++top]=j; *<|~=*Ddf
} iECC@g@a
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} 6\)8mK
file://new InsertSort().sort(data); 1{\,5U&
insertSort(data); RJ=c[nb
} s&_IWala
/** x 1%J1?Fp
* @param data <manv8*6
*/ [pRVZV
private void insertSort(int[] data) { do?S,'(g
int temp; &8:iB {n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T ?<'=
} ||*&g2Y
} EE{#S
} Un8#f+odR
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} Y|x6g(b
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归并排序: D@lAT#vA
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package org.rut.util.algorithm.support; n{qw ]/
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import org.rut.util.algorithm.SortUtil; 0N3tsIm>
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/** "ojD f3@{
* @author treeroot
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* @since 2006-2-2 $S)e"Po~5
* @version 1.0 mn6p s6OB
*/ nkCRe
public class MergeSort implements SortUtil.Sort{ W O \lny!
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/* (non-Javadoc) #LNB@E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P7BJ?x
*/ K9z_=c+
public void sort(int[] data) { gS(: c.
int[] temp=new int[data.length]; 7,&]1+n
mergeSort(data,temp,0,data.length-1); |+4E
8;4_
} 1!v >I"]
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3/SqXu
int mid=(l+r)/2; 2AdHj&XE
if(l==r) return ; i$LV44
mergeSort(data,temp,l,mid); P".qL5
mergeSort(data,temp,mid+1,r); )>#<S0>'j
for(int i=l;i<=r;i++){ L+0N@`nRF
temp=data; k}Clq;G
} 8`LLHX1|
int i1=l; px(1Ppb9
int i2=mid+1; Nm:|C 3_I
for(int cur=l;cur<=r;cur++){ MT#[ -M\
if(i1==mid+1) HjF'~n
data[cur]=temp[i2++]; xzf)_ <
else if(i2>r) !E>3N:
data[cur]=temp[i1++]; D<L{Z[
else if(temp[i1] data[cur]=temp[i1++]; @SVEhk#
else 2Z1(J% 7
data[cur]=temp[i2++]; pcxl2I
} r'JK$9
} PQ!?gj
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} 93p9?4;n-
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改进后的归并排序: (S93 %ii
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package org.rut.util.algorithm.support; H(ftOd.y
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import org.rut.util.algorithm.SortUtil; K]azUK7
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/** g=' 2~c
* @author treeroot oTa+E'q
* @since 2006-2-2 K>p:?w
* @version 1.0 (YH{%8
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*/ X/D9%[{&
public class ImprovedMergeSort implements SortUtil.Sort { gGz_t,=
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private static final int THRESHOLD = 10; -Y,Ibq
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/* /|^^v DL
* (non-Javadoc) /u1zRw
* ll^O+>1dO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UVRV7^eTe
*/ !LSWg:Ev+
public void sort(int[] data) { IZ ha* 7
int[] temp=new int[data.length]; ^O9m11
mergeSort(data,temp,0,data.length-1); k5<