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。 !nVX .m9
插入排序: l[G,sq"
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package org.rut.util.algorithm.support; U
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import org.rut.util.algorithm.SortUtil; 2l5@gDk5
/** rF~q"9
* @author treeroot $6!`
* @since 2006-2-2 e@]cI/j
* @version 1.0 n^&QOII@>
*/ }r^MXv ~(
public class InsertSort implements SortUtil.Sort{ |w~zh6~
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/* (non-Javadoc) 0SKt8pL`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @D"|Jq=6P
*/ nj7Ri=lyS
public void sort(int[] data) { ,7%(Jj$
^
int temp; 't)j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6w1:3~a
} n+uq|sYVa
} kIWQ`)'
} b:O4d<+%
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} yAi4v[
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冒泡排序: *c3o&-ke9
|um)vlN;9
package org.rut.util.algorithm.support; @XIwp2A{+
R*yB); p
import org.rut.util.algorithm.SortUtil; m9e$ZZG$
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/** > %Y#(_~a
* @author treeroot Yhsb$wu
* @since 2006-2-2 fZ
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* @version 1.0 uo%O\}#u9
*/ g:,4Kd|
public class BubbleSort implements SortUtil.Sort{ hR`dRbBi%
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/* (non-Javadoc) ,~4(td+R7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Q&z1XK3
*/ HE,wEKp
public void sort(int[] data) { V&}Z# 9Dx
int temp; Hd2_Cg FB
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]g)%yuox9F
if(data[j] SortUtil.swap(data,j,j-1); dF?pEet?2
} rvfl~<G*
} dkn_`j\v
} ^al
SyJ`
} ]D]K_`!K
?<}qx`+%Q
} #UI`G3w<
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选择排序: {Y/
Rd!.8K[
package org.rut.util.algorithm.support; pucHB<R@bL
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import org.rut.util.algorithm.SortUtil; "l@~WE
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/** ujSzm=_P
* @author treeroot g!QumRF
* @since 2006-2-2 i'u;"ot=
* @version 1.0 ?@,:\ ,G
*/ J+4uUf/d!
public class SelectionSort implements SortUtil.Sort { oy'+n-
KWY G\#S0]
/* 8]L.E
* (non-Javadoc) GJ$,@
* >*(>%E~H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S`^W#,rj
*/ I"!{HnSG`
public void sort(int[] data) { sg y
int temp; FSB$D)4z>b
for (int i = 0; i < data.length; i++) { W
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int lowIndex = i; (l,o UBRr
for (int j = data.length - 1; j > i; j--) { 0T5>i 0/
if (data[j] < data[lowIndex]) { |q>Mw-=
lowIndex = j; c%dy$mkqgK
} pWp2{G^XB
} %!S
SortUtil.swap(data,i,lowIndex); uj@<_|7
} g=(+oK?
} _7 ;^od=C
525 >=h
} Yp)U'8{h c
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Shell排序: N'1~ wxd
g}-Z]2(c#
package org.rut.util.algorithm.support; X3nhqQTZ
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import org.rut.util.algorithm.SortUtil; ["M>
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/** x(`$D
* @author treeroot z,)sS<t(
* @since 2006-2-2 12a #]E
* @version 1.0 c
v
9
6F
*/ NjxW A&[ng
public class ShellSort implements SortUtil.Sort{ &>{>k<z
t["Df;"O
/* (non-Javadoc) DE ws+y-*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l/^-:RRNKi
*/ C":\L>Ax
public void sort(int[] data) { mW-W7-JhO7
for(int i=data.length/2;i>2;i/=2){ AF$ o>f
for(int j=0;j insertSort(data,j,i); 0 l@P]_qq`
} ];;w/$zke
} o}A #-
insertSort(data,0,1); BT3O_X`u
} ^mpB\D)q
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/** GJs[m~`8#
* @param data c5e\ckqm^
* @param j SWb5K0YRn
* @param i Ba0D"2CgY
*/ E{s|#
private void insertSort(int[] data, int start, int inc) { =7fh1XnW
int temp; QJWES%m`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k+$4?/A
} z|*6fFE
} QV$dKjMS
} "NH+qQhs
"n }fEVJ,
} j#P4Le[t
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快速排序: ddDJXk)!0
?]D+H%3[$i
package org.rut.util.algorithm.support; cGta4;
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import org.rut.util.algorithm.SortUtil; %@93^q[\2
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/** 0Y*gJ!a
* @author treeroot 9~'Ip7X,!
* @since 2006-2-2 X]MM7hMuR
* @version 1.0 B4Af
*/ %GCd?cFF
public class QuickSort implements SortUtil.Sort{ )|R0_9CLV
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/* (non-Javadoc) G!LNP&~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GdeR#%z
*/ I+?$4SC
public void sort(int[] data) { nQ!#G(_nO
quickSort(data,0,data.length-1); lEbR) B,
} /\uH[[s
private void quickSort(int[] data,int i,int j){ sFM>gG
int pivotIndex=(i+j)/2; Doc'7P
file://swap ]AA*f_!
SortUtil.swap(data,pivotIndex,j); 5`'au61/2
}:l%,DBw
int k=partition(data,i-1,j,data[j]); 9g5{3N3
SortUtil.swap(data,k,j); j X!ftm2
if((k-i)>1) quickSort(data,i,k-1); OjlB0
if((j-k)>1) quickSort(data,k+1,j); $17
v,
dms:i)L2
} ]#-/i2-K
/** ^_S-s\DW
* @param data \
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* @param i 9 c5G6n0
* @param j '"fU2M<.
* @return C`~4q<W'
*/ q,,>:]f#
private int partition(int[] data, int l, int r,int pivot) { 3G/ mB
do{ ;0Ct\ [eh
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IJBJebqL
SortUtil.swap(data,l,r);
vH?+JN"A
} L1!hF3G
while(l SortUtil.swap(data,l,r); Gg pQ]rw
return l; sHPwW5j/o'
} N"
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} L[D/#0qp
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改进后的快速排序: #9hXZr/8
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package org.rut.util.algorithm.support; +?5Uy*$
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import org.rut.util.algorithm.SortUtil; vPl6Dasr
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/** Z>w^j.(
* @author treeroot k"^t?\Q%vI
* @since 2006-2-2 9>[.=
* @version 1.0 qvfAG 0p
*/ {7![3`%7
public class ImprovedQuickSort implements SortUtil.Sort { F<ocY0=9p
.iP G /e
private static int MAX_STACK_SIZE=4096; ox\B3U%`p}
private static int THRESHOLD=10; C@UJOB
/* (non-Javadoc) |p8"9jN@}c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LcpyW=)}"V
*/ n2y/zP>TC
public void sort(int[] data) { /VmCN]2AZ
int[] stack=new int[MAX_STACK_SIZE]; |<$<L`xoe
gM;)
int top=-1; f?>-yMR|
int pivot; 5fj
int pivotIndex,l,r; _sf#J|kQ
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stack[++top]=0; -M>K4*%K
stack[++top]=data.length-1; ~*PK080N}
z7@(uIl=X
while(top>0){ q(jkit~`A
int j=stack[top--]; m_E[bDON
int i=stack[top--]; V'Z&>6Z
iKF$J3a\2f
pivotIndex=(i+j)/2; lZS_n9Sc
pivot=data[pivotIndex]; dxkRk#mf:
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SortUtil.swap(data,pivotIndex,j); kY'<u
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file://partition j5,^9'
l=i-1; U=&^H!LVY
r=j; ?2?S[\@`0U
do{ ##EB; Y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8z."X$
SortUtil.swap(data,l,r); V>FT~k_"
} 't0+:o">:
while(l SortUtil.swap(data,l,r); (<bm4MPf
SortUtil.swap(data,l,j); (
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u{OS6Ky
if((l-i)>THRESHOLD){ t
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stack[++top]=i; +{")E)
stack[++top]=l-1; ;t;Y.*&=S
} 7xv4E<r2
if((j-l)>THRESHOLD){ O6m.t%*
stack[++top]=l+1; C%}]"0Q1
stack[++top]=j; sJ))<,e5I
} V>b2b5QAH,
T~i%j@Q.6
} DU5:+"
u3
file://new InsertSort().sort(data); *#&k+{a^2
insertSort(data); d5@X#3Hd
} +Dx1/I
/** YG0Px Zmi
* @param data jOUK]>ox:
*/ g>2aIun_Q
private void insertSort(int[] data) { sU) TXL'_!
int temp; q"gqO%Wb|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @s_3 0+
} r\$6'+Si
} \~JNQ&_o
} Nls83 W
"+=Pp
} Q~Ay8L+
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归并排序: si_W:mLF{a
XDPL;(?
package org.rut.util.algorithm.support; j|:dYt`WM
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import org.rut.util.algorithm.SortUtil; ?b||Cr
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/** ldA!ou7
* @author treeroot kOw=c Gt
* @since 2006-2-2 <d5@CA+M
* @version 1.0 t)YUPDQ@J
*/ yL0f1nS
public class MergeSort implements SortUtil.Sort{ `E@kFJ(<On
>~_Jq|KBB
/* (non-Javadoc) otO
j^xU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G6ayMw]OF
*/ {P-xCmZ~Wt
public void sort(int[] data) { kw*)/$5]
int[] temp=new int[data.length]; M\Se_
mergeSort(data,temp,0,data.length-1); +a%xyD:.?
} v?L
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private void mergeSort(int[] data,int[] temp,int l,int r){ v:E;^$6Vn
int mid=(l+r)/2; +R!zs
if(l==r) return ; >OV<_(S4
mergeSort(data,temp,l,mid); \)OEBN`9#
mergeSort(data,temp,mid+1,r); 1BJ<m5/1%
for(int i=l;i<=r;i++){ W{
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temp=data; c!It^*
} H+ lX-,
int i1=l; hq=,Z1J
int i2=mid+1; 7h%4]
for(int cur=l;cur<=r;cur++){ l
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if(i1==mid+1) Y25^]ON*\^
data[cur]=temp[i2++]; iK#/w1`
else if(i2>r) FZF @
data[cur]=temp[i1++]; ef=K_,
_
else if(temp[i1] data[cur]=temp[i1++]; %Tv^GP{}
else `0{ S3v
data[cur]=temp[i2++]; kbYeV_OwM
} &SH1q_&BQ
} (luKn&826
]ab#q=
} Ha%F"V*
oKA& An
改进后的归并排序: sYqgXE.
o:"anHs
package org.rut.util.algorithm.support; lwT9~Hyp
%T!J$a)qf
import org.rut.util.algorithm.SortUtil; */z??fI27
pXu/(&?
/** e4`uVq5
* @author treeroot >xqM5#m`E$
* @since 2006-2-2 !lTda<;]
* @version 1.0 n((vY.NDV
*/ kkS~4?-*
public class ImprovedMergeSort implements SortUtil.Sort { AQss4[\Dx
EH n"n"Y
private static final int THRESHOLD = 10; Pf<[|yu4?
k`\R+WK$
/* H={&3poBz
* (non-Javadoc) @F~LW6K
* CSTI?A"P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FS"eM"z
*/ usFfMF X
public void sort(int[] data) { ka"337H
int[] temp=new int[data.length]; uH@FU60
mergeSort(data,temp,0,data.length-1); eq[Et
+
} 9Q;c,]
d$W
private void mergeSort(int[] data, int[] temp, int l, int r) { {Qv>q$Q
int i, j, k; 1L nyWZ
int mid = (l + r) / 2; K_/zuTy
if (l == r) &a,OfSz
return; !#2=\LUC
if ((mid - l) >= THRESHOLD) lrWQOYf2
mergeSort(data, temp, l, mid); $ ((6=39s
else o>Er_r
insertSort(data, l, mid - l + 1); &HW1mNF9
if ((r - mid) > THRESHOLD) MJ`3ta
mergeSort(data, temp, mid + 1, r); @}-r&/#
else A{ eL l
insertSort(data, mid + 1, r - mid); '8 Ztj
Sh6JF574T
for (i = l; i <= mid; i++) { zSEs?
temp = data; P>ceeoYQuA
} S~Z|PLtF
for (j = 1; j <= r - mid; j++) { i_Re*
temp[r - j + 1] = data[j + mid]; LhXUm
} j@gMbiu
int a = temp[l]; @Ky> 9m{
int b = temp[r]; I){\0vb@
for (i = l, j = r, k = l; k <= r; k++) { F>je4S;
if (a < b) { 2&PPz}Sw
data[k] = temp[i++]; uMb>xxf
a = temp; f/,>%j=Ms
} else { "@A![iP
data[k] = temp[j--]; TL$EV>Nr
b = temp[j]; kd`0E-QU
} IQ<MyB(
} .nu @ o40
} aI(7nJ=R
{GDmVWG0q
/** | Xi%
* @param data 5!YA o\S
* @param l =*qD4qYA
* @param i `\`> 0hlu
*/ vK7\JZ>
private void insertSort(int[] data, int start, int len) { VErv;GyV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fj7|D'c
} <~TP#uAz
} hz;|NW{u
} a,F&`Wg
} W?yd#j
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堆排序: bNFLO
Q
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package org.rut.util.algorithm.support; iovfo2!hD
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import org.rut.util.algorithm.SortUtil; 2!&&|Mh}
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/**
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* @author treeroot 4'$g(+z
* @since 2006-2-2 &l$Q^g
* @version 1.0 .=m,hu~
*/ L9pvG(R%
public class HeapSort implements SortUtil.Sort{ M/x >51<
|KB0P@=a
/* (non-Javadoc) `%+ mO88o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,+`61J3W
*/
!fBF|*/
public void sort(int[] data) { zR!o{8
MaxHeap h=new MaxHeap(); KH\b_>wU2
h.init(data); E_KCNn-f
for(int i=0;i h.remove(); =@TQ>Qw%b
System.arraycopy(h.queue,1,data,0,data.length); V8eB$in
} 6wco&7
NmMIQ@K
private static class MaxHeap{ ["\;kJ.
iU6Gp-<M,
void init(int[] data){ UhIDRR
this.queue=new int[data.length+1]; BpX6aAx
for(int i=0;i queue[++size]=data; E\gim<]
fixUp(size); s@MYc@k
} "[}O"LTQ
} L4uFNM]
9qS"uj
private int size=0; qY\f'K}Q*
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private int[] queue; cb5,P~/q
iH^z:%dP
public int get() { &3J@BMYp
return queue[1]; R |KD&!~Z
} 2lL,zFAq
oD}uOC}FS{
public void remove() { vkLC-Mzm<
SortUtil.swap(queue,1,size--); <F11m(
fixDown(1); ?5kHa_^
} }w4QP+ x
file://fixdown ~
ihI_q"
private void fixDown(int k) { $%VuSrZ&
int j; fib}b?vk
while ((j = k << 1) <= size) { t4?DpE
if (j < size %26amp;%26amp; queue[j] j++; Ts~L:3oaQ
if (queue[k]>queue[j]) file://不用交换 C"IKt
break; vM_:&j_?``
SortUtil.swap(queue,j,k); A)ipFB
6K
k = j; o:V|:*1Q
} u{["50~
} a~8[<F omj
private void fixUp(int k) { 2Pc%fuC
while (k > 1) { M:5b4$Qh<
int j = k >> 1; {}:ToIp
if (queue[j]>queue[k]) %kgkXc~6|x
break; H4]Ul
eU
SortUtil.swap(queue,j,k); <V>dM4Mkr
k = j; pKi& [
} svXR<7)#
} N>>uCkC
"fq{Y~F%`
} KN-avu_Ix
}`+B=h-dW
} <id}<H
41SGWAd#:
SortUtil: |r bWYl.b
;NRF=d>
package org.rut.util.algorithm; p<:!)kt
Y3O#Q)-j$
import org.rut.util.algorithm.support.BubbleSort; aN(|'uO@
import org.rut.util.algorithm.support.HeapSort; @gG<le6
import org.rut.util.algorithm.support.ImprovedMergeSort; 8zMu7,E
import org.rut.util.algorithm.support.ImprovedQuickSort; $v Z$'(
import org.rut.util.algorithm.support.InsertSort; f|sFlUu&
import org.rut.util.algorithm.support.MergeSort; H'HSD,>(
import org.rut.util.algorithm.support.QuickSort; 36am-G
import org.rut.util.algorithm.support.SelectionSort; VWO9=A*Y|
import org.rut.util.algorithm.support.ShellSort; h>Hb`G<
Qqlup
/** )Y)pmjZaG
* @author treeroot -ig6w.%lk
* @since 2006-2-2 @]ao"ui@/
* @version 1.0 <\;#jF%V
*/ ]Zmj4vK J
public class SortUtil { <^$<#Kd
public final static int INSERT = 1; NB<A>baL*
public final static int BUBBLE = 2; 2+X\}s1vN
public final static int SELECTION = 3; *E{2J:`
public final static int SHELL = 4; @lvyDu6e
public final static int QUICK = 5; "Y\_TtY
public final static int IMPROVED_QUICK = 6; #UbF9})q
public final static int MERGE = 7; zk( U8C+
public final static int IMPROVED_MERGE = 8; 2,*M|+W~
public final static int HEAP = 9; :^(>YAyHj^
Qf@
public static void sort(int[] data) { QcpXn4/*
sort(data, IMPROVED_QUICK); l<);s
} A,4fEmWM
private static String[] name={ 9V5-%Iv
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ooQQ-?"m
}; %plo=RF
<n#DT
private static Sort[] impl=new Sort[]{ *BR ^U$,e
new InsertSort(), 71\xCSI1w&
new BubbleSort(), 4t)/
new SelectionSort(), AF%@VLf
new ShellSort(), GI&h`X5,e
new QuickSort(), KVJ_E!i
new ImprovedQuickSort(), f&
CBU
new MergeSort(), 6R^^ .tCs
new ImprovedMergeSort(), 8-O)Xx}cU
new HeapSort() LGtIm7
}; V5rST +
KY~-;0x
public static String toString(int algorithm){ BT(CM,bp
return name[algorithm-1]; bcYF\@};
} 6H7],aMg$A
4#lo$#
public static void sort(int[] data, int algorithm) { Gy(=706
impl[algorithm-1].sort(data); ~sXcnxLz
} D"D<+
;S#
/Sh#_\x
public static interface Sort { 6AhM=C
public void sort(int[] data); R47\Y
} 15sp|$&`
?F3h)(}
public static void swap(int[] data, int i, int j) { G
nG>7f[v
int temp = data; #Q
/Arq
data = data[j]; sQ\8>[]
data[j] = temp; *Em,*!
} =y!$/(H
} j?+X\PtQ