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。 4*UoTE-g$
插入排序: /HNZwbh]uJ
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package org.rut.util.algorithm.support; >4d2IO1\
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import org.rut.util.algorithm.SortUtil; Q<L.!%vu}
/** ,EgIH%*g
* @author treeroot {-rK:*yP'u
* @since 2006-2-2
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* @version 1.0 Ih}I`wY-
*/ K/~+bq#+
public class InsertSort implements SortUtil.Sort{ HrA6wn\O
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/* (non-Javadoc) ? OBe!NDf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^i{B8]2,
*/ %*.;3;m
public void sort(int[] data) { &)vX7*j
int temp; (8s]2\/Ar
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r\Wp\LfY&{
} I `44}oJ
} XM/P2=;
} 7"f$;CN?~
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} fB5Bh;K
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冒泡排序: Rg&6J#h
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package org.rut.util.algorithm.support; +w/Ax[K
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import org.rut.util.algorithm.SortUtil; O.=~/!(
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/** )o[ O%b
* @author treeroot yI9l*'
* @since 2006-2-2 yZ,k8TJ",
* @version 1.0 ,_T,B'a:
*/ #VC^><)3
public class BubbleSort implements SortUtil.Sort{ (j u-r*0
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/* (non-Javadoc) J+&AtGq]u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J
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*/ +asJV1a
public void sort(int[] data) { t8s1d
int temp; l)z15e5X
for(int i=0;i for(int j=data.length-1;j>i;j--){ >TsJ0E?3x
if(data[j] SortUtil.swap(data,j,j-1); %^"T z,f
} fHf+!
} t4?g_$>
} lN+NhPF
} (FMYR8H*(
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} 9B'l+nP
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选择排序: mW 5L;>
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package org.rut.util.algorithm.support; ;,'!
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import org.rut.util.algorithm.SortUtil; Fm-W@
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/** -3VxjycY
* @author treeroot ~`hI|i<]
* @since 2006-2-2 R*TCoEKO
* @version 1.0 =rgWOn8
*/ #'<I!G
public class SelectionSort implements SortUtil.Sort { h^>kjMM
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/* nl5K1!1
* (non-Javadoc) j&fr4t3
* |1 is!leP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ue/6DwUv
*/ ;FZ\PxN
public void sort(int[] data) { ;0xCrE{l"
int temp; m[oe$yH
for (int i = 0; i < data.length; i++) { $t1]w]}d
int lowIndex = i; SlZL%C;
for (int j = data.length - 1; j > i; j--) { F4Ft~:a
if (data[j] < data[lowIndex]) { U3lr<(r*
lowIndex = j; |i?AtOt@f
} p`1d'n[
} X>%2\S
SortUtil.swap(data,i,lowIndex); {L$b$u$7:
} FTCp3g
} -ihF)^"a
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} )dF(5,y)
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Shell排序: P>pkLP}
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package org.rut.util.algorithm.support; 8+gx?pb
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import org.rut.util.algorithm.SortUtil; 7!oqn'#>A
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/** r'&9'rir2
* @author treeroot }jiqUBn%
* @since 2006-2-2 ADv
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* @version 1.0 lbg6n:@
*/ 7@EYF
public class ShellSort implements SortUtil.Sort{ cw"x0 RS
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/* (non-Javadoc) EemKYcE@Nr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c#"\&~. P
*/ _5
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public void sort(int[] data) { 5B2x#
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for(int i=data.length/2;i>2;i/=2){ -#gb {vj
for(int j=0;j insertSort(data,j,i); ZFW}Vnl
} >w
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} jI;bVG
insertSort(data,0,1); O|y-nAZgU
} tO[+O=d
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/** 0A?w,A`"
* @param data a' #-%!]
* @param j Q(]-\L'
* @param i ;S?1E:\av
*/ K/\#FJno
private void insertSort(int[] data, int start, int inc) { $Q{1^
int temp; 0M8JE9 Kx
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); aGpRdF1;!
} zo} SS[
} Vg
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} ~BS*x+M
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} _&(ij(H
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快速排序: zZ32K@
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package org.rut.util.algorithm.support; Ac7`nvI=
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import org.rut.util.algorithm.SortUtil; -'}iK6
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/** >P0AGZ
* @author treeroot _a<PUdP
* @since 2006-2-2 /0o 2
* @version 1.0 J1R%w{
*/ &-b=gnT
public class QuickSort implements SortUtil.Sort{ -|)[s[T~m
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/* (non-Javadoc) JyB>,t)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uw&+zJ
*/ <q[*kr
public void sort(int[] data) { !zJ.rYZ=g`
quickSort(data,0,data.length-1); ~-:CN(U
} rM=Hd/ki5
private void quickSort(int[] data,int i,int j){ {eZj[*P
int pivotIndex=(i+j)/2; #[KwR\b{:+
file://swap ok6e=c '
SortUtil.swap(data,pivotIndex,j); :T{or-
8dA/dMQ
int k=partition(data,i-1,j,data[j]); GrQl3 Xi
SortUtil.swap(data,k,j); 8V|-BP5^
if((k-i)>1) quickSort(data,i,k-1); jQ^Ib]"K
if((j-k)>1) quickSort(data,k+1,j); HJcZ~5jf
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} OT *W]f
/** /Hx0=I
* @param data w`7l;7[
* @param i =~0XdS/1
* @param j YD+C1*c!
* @return YKx0Zs
*/ [ThzLk#m
private int partition(int[] data, int l, int r,int pivot) { hPk+vvXtK
do{ .86..1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A.h?#%TLL
SortUtil.swap(data,l,r); @B^'W'&C
} ]yIy~V
while(l SortUtil.swap(data,l,r); <.v6w*+{/
return l; n9J>yud|
} [KE4wz+s{
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} B0KM~cCPQP
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改进后的快速排序: .N'UnKz
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package org.rut.util.algorithm.support; ^CE:?>a$
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import org.rut.util.algorithm.SortUtil; hN:Z-el
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/** ^7''x,I
* @author treeroot .XE]vo
* @since 2006-2-2 0Gs]>B4r/
* @version 1.0 b
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*/ <n:?WP~U
public class ImprovedQuickSort implements SortUtil.Sort { \c\=S
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private static int MAX_STACK_SIZE=4096; Grub1=6l
private static int THRESHOLD=10; 0jzA\ $oD
/* (non-Javadoc) ]e3nnS1*.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |kd^]!_
*/ <qy+@t
public void sort(int[] data) { .iS]aJJ
int[] stack=new int[MAX_STACK_SIZE]; [T^6Kzz
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int top=-1; jCl[!L5/1
int pivot; LgnGqIlx
int pivotIndex,l,r; TSk6Q'L\v
l
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stack[++top]=0; .)GVb<w
stack[++top]=data.length-1; >mV""?r]
SeTU`WLEm
while(top>0){ Cn<kl^!Q-
int j=stack[top--]; |S8pq4eKJ_
int i=stack[top--]; l^"G \ZVI
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pivotIndex=(i+j)/2; =@z"k'Vl`
pivot=data[pivotIndex]; eo8 0L
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SortUtil.swap(data,pivotIndex,j); BY d3 rI
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file://partition /PCQv_Y&,/
l=i-1; =e+go
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r=j; BdKwWgi+a
do{ `Q hh{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CP'-CQ\Q
SortUtil.swap(data,l,r); xle29:?l
} ] QEw\4M?=
while(l SortUtil.swap(data,l,r); F)IP~BE-k
SortUtil.swap(data,l,j); A^7!+1*K+
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if((l-i)>THRESHOLD){ 5 9vGLN!L
stack[++top]=i; @e7+d@O<
stack[++top]=l-1; 3IkG*enI
} vKt_z@{{L
if((j-l)>THRESHOLD){ ;4bu=<%
stack[++top]=l+1; a~|ge9?
(
stack[++top]=j; E$wB bm
} 6p@ts`#
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} ^n]s}t}csV
file://new InsertSort().sort(data); >']H)c'2
insertSort(data); 9<a yQ*
} |H4'*NP"
/** }VGiT~2$
* @param data R[c_L=
*/ ;gyE5n-{
private void insertSort(int[] data) { 34=0.{qn
int temp; -*A'6%`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |3LMVN
} "mf;k^sqS
} Xy{+=UY
} #o RUH8
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} y)}aySQK^
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归并排序: M@\'Y$)Y{
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package org.rut.util.algorithm.support; &}cie"\L
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import org.rut.util.algorithm.SortUtil; Q [{vU
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/** 1|VJN D
* @author treeroot H.L@]~AyL
* @since 2006-2-2 `{Jb{L@f
* @version 1.0 7yp*I[1Qf>
*/ $#r(1 Ev
public class MergeSort implements SortUtil.Sort{ +0 MKh
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/* (non-Javadoc) hqPn~Tq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q*OKA5
*/ g$b*#
public void sort(int[] data) { .IXwa,
int[] temp=new int[data.length]; pA'A<|)K0
mergeSort(data,temp,0,data.length-1); 4_<Uk
} sfa'\6=O
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3_$eQ`AAA
int mid=(l+r)/2; Ub,unU
if(l==r) return ; U\ued=H
mergeSort(data,temp,l,mid); F
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mergeSort(data,temp,mid+1,r); R=PzR;8
for(int i=l;i<=r;i++){ d3GK.8y_z
temp=data; meR2"JN'
} MlFvDy
int i1=l; *-_Npu6
int i2=mid+1; Qx;A; n!lw
for(int cur=l;cur<=r;cur++){ 7o. 'F
if(i1==mid+1) %jkPrI
data[cur]=temp[i2++]; }El_.@'T &
else if(i2>r) !U_L7
data[cur]=temp[i1++]; cy 4'q?r
else if(temp[i1] data[cur]=temp[i1++]; Pc'?p
else &pm{7nH
data[cur]=temp[i2++]; ` qTY
} %S.U`(.
} vXbT E$
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} Ao T 7sy7
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改进后的归并排序: =]e^8;e9
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package org.rut.util.algorithm.support; Br5Io=/wg
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import org.rut.util.algorithm.SortUtil; $4
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/** -(1\`g07
* @author treeroot P~e$iBH'
* @since 2006-2-2 dU6LB+A
* @version 1.0 I0K!Kcu5Iu
*/ pm\X*t}L
public class ImprovedMergeSort implements SortUtil.Sort { }eM<A$J
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private static final int THRESHOLD = 10; de9l;zF
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/* =joXP$n^
* (non-Javadoc) e6lOmgHn5
* K"7;Y#1g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x-&v|w '
*/ P*`xiTA
public void sort(int[] data) { YS~t d+*
int[] temp=new int[data.length]; r z{ 'X d
mergeSort(data,temp,0,data.length-1); ?(yFwR,(
} ]0 RX o3
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private void mergeSort(int[] data, int[] temp, int l, int r) {
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int i, j, k; +f!,K
int mid = (l + r) / 2; F|TMpH/
if (l == r) "R@N|Qx'
return; MdZgS#`
if ((mid - l) >= THRESHOLD) dM{~Ubb
mergeSort(data, temp, l, mid); DA`sm
else x9l0UD*+g
insertSort(data, l, mid - l + 1); mo[<4Uks
if ((r - mid) > THRESHOLD) 2F@)nh
mergeSort(data, temp, mid + 1, r); c8tC3CrKp=
else 0WE1}.J<
insertSort(data, mid + 1, r - mid); ?7)(qnbe"
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for (i = l; i <= mid; i++) { FJ8@b
temp = data; BK9x`Oo 2
} '<< ~wt
for (j = 1; j <= r - mid; j++) { Uy5 !H1u
temp[r - j + 1] = data[j + mid]; PMhhPw]
} 1D p@n
int a = temp[l]; _G #"B{7
int b = temp[r]; ;+34g6
for (i = l, j = r, k = l; k <= r; k++) { lc7a@qnw
if (a < b) { bDBO+qA
data[k] = temp[i++]; zL`uiZl
a = temp; `(/saq*
} else { e>9Z:vY
data[k] = temp[j--]; =4<S8Cp
b = temp[j]; X|E+K
} rw[ {@|)'z
} A]Tcj^#
} ,GkW. vEU
ds;cfj[
/** nVn|$ "r
* @param data ywynx<Wg
* @param l Kt,ynA
* @param i 34wM%@D*c
*/ t-*|Hfp*^
private void insertSort(int[] data, int start, int len) { ?4[Oh/]R
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); SiqX1P
} a,*p_:~i
} %m{.l4/!O
} D?yE$_3>c
} <o!&Kk 9
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堆排序: ``|RO[+2
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package org.rut.util.algorithm.support; {{*]bGko
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import org.rut.util.algorithm.SortUtil; E<Dh_K
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/** BCUt`;q ]B
* @author treeroot ;=+Zw1/g
* @since 2006-2-2 ,ah*!Zm.kk
* @version 1.0 fA_%8CjI
*/ =Y/fF
public class HeapSort implements SortUtil.Sort{ pq[X)]z|
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/* (non-Javadoc) Z%5nVsm:G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g:DTVq
*/ yvd
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public void sort(int[] data) { T3 9C lH
MaxHeap h=new MaxHeap(); 4[#6<Ixf
h.init(data); \}Acq;
for(int i=0;i h.remove(); /$9
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System.arraycopy(h.queue,1,data,0,data.length); ^+%tlX_+.
} 5rml Aq
Cb{A:\>Q{
private static class MaxHeap{ $HBT%g@UN
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void init(int[] data){ tpa^k
this.queue=new int[data.length+1]; J,0pe\5
for(int i=0;i queue[++size]=data; @>G&7r:U
fixUp(size); o"#TZB+k
} }B=qH7u.K
} YWRE&MQ_
w=D%D8 r2
private int size=0; UV']NHh
lH)em.#
private int[] queue; #~4{`]W6
b
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public int get() { <r<Dmn|\a
return queue[1]; d]CviQUq
} J0Hm)*
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public void remove() { 7Ai o`&^
SortUtil.swap(queue,1,size--); J3~hzgY
fixDown(1); ,](v?v.[4
} Jh$"f r3
file://fixdown F)/~p&H
private void fixDown(int k) {
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int j; *H5PT
while ((j = k << 1) <= size) { CZJHE>
if (j < size %26amp;%26amp; queue[j] j++; tE]5@b,R
if (queue[k]>queue[j]) file://不用交换 uNe}"hs
break; qDRNtFa
SortUtil.swap(queue,j,k); \D,M2vC~G
k = j; QB/7/PW{H\
} ]yAEjn9cN
} ~v2V`lxh
private void fixUp(int k) { 4ZI!,lv*
while (k > 1) { tw'hh@7-Y
int j = k >> 1; ?7yQ&