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。 Dl}$pN
插入排序: cv`~y'?D
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package org.rut.util.algorithm.support; o6p98Dpg
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import org.rut.util.algorithm.SortUtil; jRatm.N
/** LW(6$hpPp
* @author treeroot !kC*g
* @since 2006-2-2 k!{p7*0
* @version 1.0 $kQ~d8 O
*/ eY e, r
public class InsertSort implements SortUtil.Sort{ 1UQHq@aM
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/* (non-Javadoc) b6*!ACY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t]e;;q=L.
*/ N\bocMc,X
public void sort(int[] data) { h\'n**f_x
int temp; %'T #pz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =)7s $
p
} 2@
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} "]G\9b)
} AQ='|%
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} Pfs;0}h5
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冒泡排序: 2;?I>~
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package org.rut.util.algorithm.support; T'~!9Q
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import org.rut.util.algorithm.SortUtil; /:FOPPs
!* OJ.W&
/** .(WQYOMl0
* @author treeroot iya"ky~H
* @since 2006-2-2 *<!oHEwkN
* @version 1.0 GDuMY\1
*/ dc rSz4E|>
public class BubbleSort implements SortUtil.Sort{ )Qvk*9OS
x)_0OR2lkp
/* (non-Javadoc) n\Lb.}]1~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l\n@cQR
*/ kTvd+TP4
public void sort(int[] data) { &e8s65`
int temp; t N2Md}@e
for(int i=0;i for(int j=data.length-1;j>i;j--){ !e?.6% %
if(data[j] SortUtil.swap(data,j,j-1); R,Vd.-5M
} c?@T1h4
} OiP!vn}k
} &/Q0
} u#@Q:tnN_
q?ix$nKOv
} NhYLtw^u
Q6r7.pk"SU
选择排序: pn^ d]rou?
rX1QMR7?
package org.rut.util.algorithm.support; J^g!++|2P
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import org.rut.util.algorithm.SortUtil; S)/_muP
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/** a.zpp'cEb
* @author treeroot \~_9G{2?
* @since 2006-2-2 ,#kIr
* @version 1.0 pt}X>ph{
*/ wLH] <k
public class SelectionSort implements SortUtil.Sort { nxl[d\ap+n
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/* +) m_o"hl
* (non-Javadoc) .?hP7;hhI
* 1&U>,;]*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-*!pRaVU
*/ "%x<ttLl
public void sort(int[] data) { h?azFA~
int temp; C;vtY[}<
for (int i = 0; i < data.length; i++) { Vkc#7W(
int lowIndex = i; w/ K_B:s
for (int j = data.length - 1; j > i; j--) { HC}YY2
if (data[j] < data[lowIndex]) { *VZ5B<Ic
lowIndex = j; r#B+(X7LM
} "^]cQ"A
} r#Oo
nZ
SortUtil.swap(data,i,lowIndex); w4d--[Q
} [2{1b`e
} ^R@j=_8}
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} aX }P|l
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Shell排序: Mwr"~?\\
.uk>QMs1
package org.rut.util.algorithm.support; yT,.z 0
ok4@N @
import org.rut.util.algorithm.SortUtil; fwRZ5`v<
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/** ^!by3Elqqk
* @author treeroot {7/0< NG
* @since 2006-2-2 Zc`BiLzrIG
* @version 1.0 GHeVp/u
*/ 1OF&
*
public class ShellSort implements SortUtil.Sort{ E3iW-B8u8
:B:"NyPA
/* (non-Javadoc) }I2@%tt?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;IokThI
*/ sK5r$Dbr
public void sort(int[] data) { ZKckAz\#
for(int i=data.length/2;i>2;i/=2){ 2j[&=R/.
for(int j=0;j insertSort(data,j,i); ~7zGI\=P@
} _&b4aW9<
} 4sT88lG4n
insertSort(data,0,1); HZf/CE9T
} '4#}e[e
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+|
/** 3z&Fi;<+j
* @param data "UJ
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* @param j & J2M1z%
* @param i cu/5$m?xx
*/ 9*1,!%]
private void insertSort(int[] data, int start, int inc) { ML>[^F
int temp; W!>.$4Q9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k|H:
} 9c6gkt9eB
} D'Y-6W3
} |YY_^C`"-
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} ]&pds\
M!XsJ<jN/
快速排序: z=3\Ab
-#HA"7XOE
package org.rut.util.algorithm.support; hs$GN]
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import org.rut.util.algorithm.SortUtil; t?'!$6
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/** % V8U(z
* @author treeroot #Ibp(
* @since 2006-2-2 2P@sn!*{1
* @version 1.0 +P`*kj-P\
*/ Kiu_JzD
public class QuickSort implements SortUtil.Sort{ 1jF`5k
PU1Qsb5
/* (non-Javadoc) trp0V4b8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [S>2ASj
*/ AGYc |;
public void sort(int[] data) { 7*Ej. HK
quickSort(data,0,data.length-1); j+,d^!
} @-!}BUs?
private void quickSort(int[] data,int i,int j){ suzZdkMA
int pivotIndex=(i+j)/2; DuHu\>f<S
file://swap !74S
SortUtil.swap(data,pivotIndex,j); W|g4z7Pb
hj.a&%
int k=partition(data,i-1,j,data[j]); bKN@j'M
SortUtil.swap(data,k,j); <yH4HY
if((k-i)>1) quickSort(data,i,k-1); J.xPv)1'
if((j-k)>1) quickSort(data,k+1,j); *=I}Qh(1
#/<&*Pu5t
} U5.LDv;
/** /q`xCS
* @param data 0p}D(m2B
* @param i 2
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* @param j YLzx<~E4a
* @return 2-Ej4I~
*/ VYk!k3qS
private int partition(int[] data, int l, int r,int pivot) { zIu
E9l
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zPjHsulK
SortUtil.swap(data,l,r); 9E>|=d|(d
} xY^%&n
while(l SortUtil.swap(data,l,r); 75/(??2
return l; 2bkX}FWd;
} E{Ov>osq
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} ^Uf]Q$uCjE
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改进后的快速排序: [Q/TlO t5
ov_j4j>6P
package org.rut.util.algorithm.support; [8=vv7wS
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import org.rut.util.algorithm.SortUtil; AN/;)wc
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/** n
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* @author treeroot U$WxHYo
* @since 2006-2-2 < v@9#c
* @version 1.0 q$B>|y U
*/ EkjN{$*
public class ImprovedQuickSort implements SortUtil.Sort { O\"3J(y,
xQ^E"Q,1
private static int MAX_STACK_SIZE=4096; YW( Qmo7
private static int THRESHOLD=10; pH"#8O&
/* (non-Javadoc) e'~J,(fB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }:KEj_~.
*/ zGAq-<
public void sort(int[] data) { _0]S69lp
int[] stack=new int[MAX_STACK_SIZE]; #/Vh|UeX
PE3vQH=t~
int top=-1; mR?5G:W~R
int pivot; ~nh:s|l6%M
int pivotIndex,l,r; pxCK;]
S/e2P|}
stack[++top]=0; C(#u[8
stack[++top]=data.length-1; %}Ss,XJ
x:7b/j-
while(top>0){ ?&63#B,iZ
int j=stack[top--]; /tf5Bv'<
int i=stack[top--]; !O:y@
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pivotIndex=(i+j)/2; pEIRh1
pivot=data[pivotIndex]; GS a[
oh
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SortUtil.swap(data,pivotIndex,j); [BqHx5Xz(
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file://partition e%@~MQ-
l=i-1; >aj7||K
r=j; > dI LF
do{ UQC=g
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `lO[x.[
SortUtil.swap(data,l,r); kT"Kyd
} +'I+o5*
while(l SortUtil.swap(data,l,r); 3L_\`Ia9
SortUtil.swap(data,l,j); GzI yP(U
{MCi<7j<?
if((l-i)>THRESHOLD){ #xQr<p$L6
stack[++top]=i; iS
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stack[++top]=l-1; R3;Tk^5A
} b\$}>O
if((j-l)>THRESHOLD){ Rv$[)`&T
stack[++top]=l+1; &U5{Hm9Ynr
stack[++top]=j; _m
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} {B?Wu3-
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} @` 1Ds
file://new InsertSort().sort(data); *E/`KUG]
insertSort(data); {=!b/l;@
} QLEKsX7p>
/** ktFhc3);!
* @param data k@f g(}6
*/ qln3 k`
private void insertSort(int[] data) { p?);eJtV/
int temp; beRVD>T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r&R B9S@*h
} El[)?+;D
} +;N2p1ZBf
} VEqS;~[
bF"G[pD
} %,6#2X nX%
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归并排序: g*e
7hlO#PYZ
package org.rut.util.algorithm.support; Jq&uF*!
k.vBj~xU
import org.rut.util.algorithm.SortUtil; 9F)z4
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/** 4'g;TI^
* @author treeroot wVicyiY]
* @since 2006-2-2 ;t<QTGJ
* @version 1.0 z(_Ss@ $
*/ vY }A
public class MergeSort implements SortUtil.Sort{ TZ(cu>
G-xDN59K
/* (non-Javadoc) P"y`A}Bx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / ';0H_
*/ juka0/
public void sort(int[] data) { pQ=>.JU
int[] temp=new int[data.length]; @z4*.S&tz
mergeSort(data,temp,0,data.length-1); 544X1Ww2
} Pe3@d|-,MU
XC0bI,Fu,
private void mergeSort(int[] data,int[] temp,int l,int r){ 'IZI:V"
int mid=(l+r)/2; B$ajK`x&I
if(l==r) return ; .aAL]-Rj
mergeSort(data,temp,l,mid); u frW\X
mergeSort(data,temp,mid+1,r); i'H/ZwU
for(int i=l;i<=r;i++){ n>+mL"hs
temp=data; )uj Ex7&c
} Rzbj
int i1=l; ^)(bM$(`
int i2=mid+1; ~P8tUhffK
for(int cur=l;cur<=r;cur++){ T>}5:,N~
if(i1==mid+1) 66/3|83Z
data[cur]=temp[i2++]; 5][Ztx
else if(i2>r) \`oT#|0
data[cur]=temp[i1++]; uC+V6;
else if(temp[i1] data[cur]=temp[i1++]; y .#")IAF
else dv8>[#
data[cur]=temp[i2++]; U3T#6Rptl
} cC=[Saatsf
} f&eK|7J_Yf
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} |Y$uqRdV
*)ardZV${
改进后的归并排序: 1crnmJ!C
s} UjGFP
package org.rut.util.algorithm.support; UDL!43K
+Z7th7W/,
import org.rut.util.algorithm.SortUtil; pk?w\A}
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/** PD&\LbuG
* @author treeroot u<3HQ.:;
* @since 2006-2-2 OMWbZ>jB
* @version 1.0 vwjPmOjhS
*/ rai3<_W<
public class ImprovedMergeSort implements SortUtil.Sort { ROg(U8
N
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private static final int THRESHOLD = 10; u.d).da
C8[&S&<_<
/* &Q;sSIc
* (non-Javadoc) Ss~;m']68
* "x=f=;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !/}O>v~o
*/ <,Ue
0
public void sort(int[] data) { WM| dKF
int[] temp=new int[data.length]; wfU7G[
mergeSort(data,temp,0,data.length-1); eqP&8^HP
} $FlW1E j
As 3.Q(#Z
private void mergeSort(int[] data, int[] temp, int l, int r) { LQ(yScA@
int i, j, k; [s"O mAy4
int mid = (l + r) / 2; jNLw=
if (l == r) YVYu:}e3)
return; $}J5xG,}$
if ((mid - l) >= THRESHOLD) (g[h
8
c
mergeSort(data, temp, l, mid); _A+s)]}
else B^j
insertSort(data, l, mid - l + 1); jT8#C=a7
if ((r - mid) > THRESHOLD) wF <n=
mergeSort(data, temp, mid + 1, r); XWA:J^
else D2](da:]8)
insertSort(data, mid + 1, r - mid); zo +nq%=
~%^
tB
for (i = l; i <= mid; i++) { bu:S:`
temp = data; ln?v
j)j
} ;'5>q&[qbP
for (j = 1; j <= r - mid; j++) { (d(hR0HKE
temp[r - j + 1] = data[j + mid]; AvdXEY(-
} 7![,Q~Fy
int a = temp[l]; M,/mE~
int b = temp[r]; o*DN4oa)
for (i = l, j = r, k = l; k <= r; k++) { r G4';V^q
if (a < b) { MS\>DW
data[k] = temp[i++]; !G SV6
a = temp; v%"|WV[N
} else { e?7&M
data[k] = temp[j--]; Pl=ZRKn
b = temp[j]; R%Q@
} b~'"^ Bts*
} V,q](bg
} Pa{%\dsv
BFL`!^
/** uT}' Y)m
* @param data 5]n[]FW
* @param l V}dJ.I /#
* @param i FrTi+& <
*/ AWP"b?^G|
private void insertSort(int[] data, int start, int len) { ]|MEx{BG-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .Xce9C0SW
} 9[G[$c
} [x9KVd ^d
} 1+9W+$=h2
} POvP]G9'"
Z8rvWH9
堆排序: clNkph
R{ a"Y$
package org.rut.util.algorithm.support; Q^
pmQ
B[V+ND'(
import org.rut.util.algorithm.SortUtil; { jhr<
Z?%zgqTXb
/** XmEq2v
* @author treeroot kuol rfGB
* @since 2006-2-2 ;?8_G%va
* @version 1.0 tS|(K=$
*/ fjU8gV
public class HeapSort implements SortUtil.Sort{ $lLz3YS
c- }X_)U }
/* (non-Javadoc) vU767/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 95YL]3V
*/ %]>KvoA
public void sort(int[] data) { pgOQIzu
MaxHeap h=new MaxHeap(); @&1ZB6OCb:
h.init(data); }HY-uQ%@g
for(int i=0;i h.remove(); TNGU6j}oq
System.arraycopy(h.queue,1,data,0,data.length); BsEF'h'Owh
} hS)'a^FV
huJ&]"C
private static class MaxHeap{ jg.QRny^
Y8o)FVcyNy
void init(int[] data){ z"0I>gl
this.queue=new int[data.length+1]; 8Le||)y,\
for(int i=0;i queue[++size]=data; (>r[-Bft
fixUp(size); Cq%IE^g<
} )rekY;
} D|Q#gcWp o
,6om\9.E@
private int size=0; 3wC' r
:.$3vaZ@
private int[] queue; _NMm/]mN /
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public int get() { MOn
return queue[1]; 8P1=[i]
} ',:*f8Jk
`[W[H(AjQ
public void remove() { P*I}yPeb
SortUtil.swap(queue,1,size--); EL(nDv
fixDown(1); bI:zp!-.
} hJZV}a|
file://fixdown y *fDwd~
private void fixDown(int k) { fp+gyTnd3
int j; H[S%J3JI
while ((j = k << 1) <= size) { [[;e)SoA
if (j < size %26amp;%26amp; queue[j] j++; 6f\Lf?vF
if (queue[k]>queue[j]) file://不用交换 0a}u;gt,4w
break; jpO7'ivG
SortUtil.swap(queue,j,k); BK,{N0
k = j; 4iKgg[)7`=
} X{\F;Cb*
} `NgAT
3zq
private void fixUp(int k) { nv@8tdrc
while (k > 1) { ><gG8MH0'
int j = k >> 1; pKit~A,Q
if (queue[j]>queue[k]) bT^I"
break; %?p1d!
SortUtil.swap(queue,j,k); ~v6OsH%vx
k = j; =Ur}~w&H8
} aB7+Tb
} ][?G/*k
Ry%Mej:
} .6`9H 1
&(xH$htv1
} i 7x7xtq
wid;8%m
SortUtil: rvXWcu -"
K95p>E`9e
package org.rut.util.algorithm;
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[Pq}p0cD
import org.rut.util.algorithm.support.BubbleSort; |MFF7z{%
import org.rut.util.algorithm.support.HeapSort; K':K{ee>
import org.rut.util.algorithm.support.ImprovedMergeSort; YKO){f5
import org.rut.util.algorithm.support.ImprovedQuickSort; ;#oie<
Vit
import org.rut.util.algorithm.support.InsertSort; `Ye\p6v!+
import org.rut.util.algorithm.support.MergeSort; <8d^^0
import org.rut.util.algorithm.support.QuickSort; <N_+=_
import org.rut.util.algorithm.support.SelectionSort; IE9XU9Kd
import org.rut.util.algorithm.support.ShellSort; W9D86]3Y
j(RWO
/** j^^Ap
* @author treeroot >(?9?
* @since 2006-2-2 p;tVn{u
* @version 1.0 mR}6r2O2\Q
*/ DGAX3N;r6{
public class SortUtil { c6X}2a'
public final static int INSERT = 1; lzYnw)Pv
public final static int BUBBLE = 2; 6P5Ih
public final static int SELECTION = 3; ?34 e-
public final static int SHELL = 4; iVy7elT;R
public final static int QUICK = 5; y5do1Z
public final static int IMPROVED_QUICK = 6; -Xxqm%([71
public final static int MERGE = 7; pXJpK@z
public final static int IMPROVED_MERGE = 8; n#wI@W>%+
public final static int HEAP = 9; .zn;:M#T
Db;G@#x
public static void sort(int[] data) { DjN|Wr)*
sort(data, IMPROVED_QUICK); ;K!]4tfJ
} X_$Cb<e
private static String[] name={ +YqZ((
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $CY't'6Hn
}; j}~86JO+Cw
$+>M{fg?
private static Sort[] impl=new Sort[]{ WC.t_"@
new InsertSort(), kX>f^U{j
new BubbleSort(), Y0_),OaY
new SelectionSort(), ++V=s\d7
new ShellSort(), +;#Y]xy:
new QuickSort(), 7tcPwCc{
new ImprovedQuickSort(), qL6
|6-?
new MergeSort(), Y@b.sMg{
new ImprovedMergeSort(), l)!n/x_ !
new HeapSort() $aN&nhoO<
}; 21< j\
M
5lm<%
public static String toString(int algorithm){ d"6&AJ5a
return name[algorithm-1]; ,:Lb7bFv>
} [L:o`j
|=$-Wu
public static void sort(int[] data, int algorithm) { +eX@U;J,g
impl[algorithm-1].sort(data); 4)U.5FBk
)
} ?84
s4BpV1
,ztI,1"k
public static interface Sort { ?ON-+u
public void sort(int[] data); !-,t'GF(
} #1c_ev H
H
Ge0hl[n
public static void swap(int[] data, int i, int j) { DM}YJ
int temp = data; 8[J}CdS
data = data[j]; /ig:9R
data[j] = temp; Um: Hrjw
} dO4{|(z
}
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