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。 05pCgI}F>
插入排序: 'A8T.BU
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package org.rut.util.algorithm.support; ;co{bk|rj
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import org.rut.util.algorithm.SortUtil; 1<59)RiO>
/** rhn*kf{8
* @author treeroot ^QW%<X
* @since 2006-2-2 R!pV`N
* @version 1.0 &<^@/osi
*/ :f/ p5c
public class InsertSort implements SortUtil.Sort{ "F[VqqD
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/* (non-Javadoc) m_Fw;s/9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dEe/\i'r9
*/ Y?%6af+
public void sort(int[] data) { {&h &:
int temp; B-&J]H
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |g'sRTKJ
} <RhKlCP
} U.^)|IHW
} "!Qhk3*
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} 'Ux_X:,:;
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冒泡排序: 3mm`8!R
O5=ggG
package org.rut.util.algorithm.support; <hK$Cf_
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import org.rut.util.algorithm.SortUtil; I8Zp#'|U
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/** .i=%gg
* @author treeroot D{l.WlA.
* @since 2006-2-2 uRL3v01?H0
* @version 1.0 AV2q*
*/ 5r+0^UAO:J
public class BubbleSort implements SortUtil.Sort{ Y?5yzD:
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/* (non-Javadoc) ,F-tvSc\Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?xf;#J+{8
*/ NqwVsVL
public void sort(int[] data) { [{ { ?e6J
int temp; 3,F/i+@
for(int i=0;i for(int j=data.length-1;j>i;j--){ h?ia4t
if(data[j] SortUtil.swap(data,j,j-1); +I Ze`M%n
} ~.@fk}'R
} .nSupTyG
} yav)mO~QU6
} c^6`"\X^g
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} R/Y/#X^b
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选择排序: CMg83
zhCI+u4/qz
package org.rut.util.algorithm.support; )-QNWN
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import org.rut.util.algorithm.SortUtil; W8P**ze4)
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/** *g,?13Q_
* @author treeroot ZK
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* @since 2006-2-2 `-/l$A}
U
* @version 1.0 (jm.vL&5j
*/ XeB>V.<y
public class SelectionSort implements SortUtil.Sort {
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<eh(~
/* !:n),sFv45
* (non-Javadoc) 8;!Eqyt
* U.)G#B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}PFi T^
*/ NSgHO`gU8
public void sort(int[] data) { Zn/9BO5
int temp; t!T}Pg(Bo
for (int i = 0; i < data.length; i++) { F889JSZ%
int lowIndex = i; I|j tpv}
for (int j = data.length - 1; j > i; j--) { R^2Uh$kk{A
if (data[j] < data[lowIndex]) { (O-)uC
lowIndex = j; ~c="<xBE
} z^Jl4V
} #VOjnc/rW
SortUtil.swap(data,i,lowIndex); -+9x 0-P
} _eQP0N
} a?Y1G3U'
rqFs[1wr>R
} vl5n%m H>^
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Shell排序: OhW=F2OIV
{.lF~cOu
package org.rut.util.algorithm.support; E&>,B81
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import org.rut.util.algorithm.SortUtil; !U#++Zig%
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/** YEQW:r_h.S
* @author treeroot &CL|q+-
* @since 2006-2-2 ZM vTDH!
* @version 1.0 I1myu Z
*/ _M&.kha
public class ShellSort implements SortUtil.Sort{ ob] lCX)
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/* (non-Javadoc) g&"(- :
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |x6mkSf]ke
*/ 8Wj=|Ow-q
public void sort(int[] data) { NVjJ/
for(int i=data.length/2;i>2;i/=2){ }m9LyT=~$
for(int j=0;j insertSort(data,j,i); ;/V@N |$n
} yo*iv+l
} Lmwh`oOl
insertSort(data,0,1); nFfCw%T?
} }91mQ`3
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/** *!'&:
* @param data mU=6"A0
U
* @param j |\a:]SlH
* @param i Xo@YTol
*/ nF'xV44"
private void insertSort(int[] data, int start, int inc) { S(J\<)b
int temp; mei_aN7zW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RGO:p]t|
} A&P1M6Of
} U R@BSK'
} s\W
M?B(<j1Ri
} IMGqJc,7
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快速排序: pIu H*4Vz
m IzBK]@^
package org.rut.util.algorithm.support; %<?ciU
w`}9/s;$
import org.rut.util.algorithm.SortUtil; s1vrzze
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/** TJXraQK-=
* @author treeroot ]VWfdG
* @since 2006-2-2 b.4Xn0-M
* @version 1.0 vSYKe
*/ q.MVF]
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) $G_Q`w=jM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _GO+fB/Q1
*/ u`pROd/ R5
public void sort(int[] data) { 8A:^K:Q
quickSort(data,0,data.length-1); %%~}Lw
} *>'2$me=
private void quickSort(int[] data,int i,int j){ cHL]y0>
int pivotIndex=(i+j)/2; hRr1#'&
file://swap Y_@"v#,
SortUtil.swap(data,pivotIndex,j); A$~xG(
=u8D!AxT
int k=partition(data,i-1,j,data[j]); fT3*>^Uv
SortUtil.swap(data,k,j); v'Vt
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if((k-i)>1) quickSort(data,i,k-1); T@|l@xm~L
if((j-k)>1) quickSort(data,k+1,j); ;:Z=%R$wJ
^ L^F=q x
} Ao":9r[V
/** )M'UASB;8
* @param data ~"0@u
* @param i _~[?>cF%
* @param j JT|u;Z*n
* @return ?{: D,{+
*/ cVay=5].
private int partition(int[] data, int l, int r,int pivot) { um jhG6
do{ y|.fR>5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v'@b. R,
SortUtil.swap(data,l,r); *sw-eyn(
} (
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while(l SortUtil.swap(data,l,r); MdH97L)L.0
return l; ]iDJ*!I
} uyNJN
Vd+Q:L
} 5!AV!A_Jp
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改进后的快速排序: =dM.7$6) R
m1-\qt-yy
package org.rut.util.algorithm.support; *AH^%!kVP
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import org.rut.util.algorithm.SortUtil; Ud#X@xK<h
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/** <jUrE[x
* @author treeroot >`89N'lZBm
* @since 2006-2-2 MCeu0e^)
* @version 1.0 @8nLQh^
*/ qWO]s=V!
public class ImprovedQuickSort implements SortUtil.Sort { wn+j39y?ZY
j/9WOIfa
private static int MAX_STACK_SIZE=4096; 2vc\=
private static int THRESHOLD=10; vUYJf99B
/* (non-Javadoc) SFn 3$ rh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8?7kIin
*/ $J"%I$%X=
public void sort(int[] data) { I1)-,/nEjg
int[] stack=new int[MAX_STACK_SIZE]; )'5<6Q.]
%X4-a%512
int top=-1; hOPe^e"
int pivot; l(%k6
int pivotIndex,l,r; Sty!atEWT
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stack[++top]=0; lwOf)jK:J
stack[++top]=data.length-1; u#+RUtM
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while(top>0){ ?MC(}dF0
int j=stack[top--]; Xsd$*F@<
int i=stack[top--]; \+k, :8s/
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pivotIndex=(i+j)/2; tAqA^f*{
pivot=data[pivotIndex]; ~BZXt7DE
j z~[5m}J
SortUtil.swap(data,pivotIndex,j); QCOLC2I
ja[OcR-tX
file://partition -J,Q;tj
l=i-1; B0oxCc/'sZ
r=j; X9fNGM1
do{ ,+tPRkwA^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |gnAqkW0
SortUtil.swap(data,l,r); u#`+[AC`
} ImIqD&a-h
while(l SortUtil.swap(data,l,r); 1^C|k(t
SortUtil.swap(data,l,j); _>Pk8~m
NZLXN
if((l-i)>THRESHOLD){ Ly9Q}dL
stack[++top]=i; 2sKG(^=Z
stack[++top]=l-1; .^i<xY
} :l+_ja&o
if((j-l)>THRESHOLD){ pW\z\o/2
stack[++top]=l+1; 4\M8BRuE
stack[++top]=j; *URdd,){i
} eZg$AOpU
EeCFII
} iTh
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file://new InsertSort().sort(data); H]s4% 9T
insertSort(data); W h| L
} <uZPqi||
/** !@u&{"{`
* @param data a3q\<"|
*/ ,"Tjpdf
private void insertSort(int[] data) { y%4 Gp
int temp; P5xI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]pnYvXf>!
} v~"Ef_`
} |rMq;Rgu?
} n)#Lh
7X"
k oM]S+1
} !k,<|8(0
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归并排序: M>T[!*nTj
:BZMnCfA
package org.rut.util.algorithm.support; `(!NYx
xf/m!b"p
import org.rut.util.algorithm.SortUtil; _gKu8$o=-
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/** !.EcP=S
* @author treeroot )1f+ld%R
* @since 2006-2-2 o/cr{>"N
* @version 1.0 c3] C:t+
*/ JSgpb?(
public class MergeSort implements SortUtil.Sort{ 1Bg_FPu
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/* (non-Javadoc) ,/&Z3e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @`w n<%o$
*/ OV[`|<C '
public void sort(int[] data) { ?E<c[*F05
int[] temp=new int[data.length]; 'wZ_4XjD
mergeSort(data,temp,0,data.length-1); 3B{[%#vO
} dQ9
ah
;i\C]*
private void mergeSort(int[] data,int[] temp,int l,int r){ s qpGrW.
int mid=(l+r)/2; 4T`&Sl
if(l==r) return ; 6NX3"i0eT
mergeSort(data,temp,l,mid); 3]/.\(2
mergeSort(data,temp,mid+1,r); #~k[ 6YR 0
for(int i=l;i<=r;i++){ ^s{hs(8%R
temp=data; :CaTP% GW
} X|b2c+I
int i1=l; }>}1oUCi
int i2=mid+1; &[_ZXVva~
for(int cur=l;cur<=r;cur++){ -7%X]
if(i1==mid+1) %d;<2b0
data[cur]=temp[i2++]; .9h)bf+
else if(i2>r) ,l HLH
data[cur]=temp[i1++]; !msNEE@[
else if(temp[i1] data[cur]=temp[i1++]; [i7YVwG4
else |QMA@Mx
data[cur]=temp[i2++]; [2
zt ^
} $^_|j1z#i
} WUEHB
nY_?Jq
} 30Drrno7Io
jL>:>r
改进后的归并排序: >7b)y
OBOwz4<
package org.rut.util.algorithm.support; E0 l_--
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import org.rut.util.algorithm.SortUtil; wLJ]&puwm
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/** WE6\dhJ<
* @author treeroot Ug%_@t/?
* @since 2006-2-2 sL^yB
* @version 1.0 / T
c=
*/ b]Z@^<_E
public class ImprovedMergeSort implements SortUtil.Sort { OCV+h'
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private static final int THRESHOLD = 10; y\c"b-lQX
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/* /JJw 6[N
* (non-Javadoc) !#yq@2QX
* u1^wDc*xg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mpw~hW0-
*/ SA"p\}"
public void sort(int[] data) { An`3Ex[
int[] temp=new int[data.length]; b1#dz]
mergeSort(data,temp,0,data.length-1); p#P~Q/;
} U7@AC}.+
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private void mergeSort(int[] data, int[] temp, int l, int r) { c}Z6V1]QP
int i, j, k; 4,Ic}CvM
int mid = (l + r) / 2; &[vw 0N-
if (l == r) 9A'Y4Kg<C
return; 1{x.xi"A/
if ((mid - l) >= THRESHOLD) "r4AY
mergeSort(data, temp, l, mid); - YqYcer
else &)d$t'7p
insertSort(data, l, mid - l + 1); VosZJv=
if ((r - mid) > THRESHOLD) f|7\DeY9U
mergeSort(data, temp, mid + 1, r); ZUm?*.g\^
else \>. LW9
insertSort(data, mid + 1, r - mid); 1/+C5Bp*
XN=67f$Hw
for (i = l; i <= mid; i++) { ,_.I\EY[
temp = data; }Db[ 4
} 3g'S\G@
for (j = 1; j <= r - mid; j++) { %8~Q!=*Iq
temp[r - j + 1] = data[j + mid]; x&sI=5l
} S{t +>/
int a = temp[l]; ?t&kb7
int b = temp[r]; s9;#!7ms
for (i = l, j = r, k = l; k <= r; k++) { 6 gL=u-2
if (a < b) { Rk<@?(l!6x
data[k] = temp[i++]; E51dV:l
a = temp; }_/Hdmmx
} else { q%n6K
data[k] = temp[j--]; gN8hJG'0
b = temp[j]; GYxM0~:$k
} 8H,4kY?Z
} ]B"'}%>ez
} jdZ~z#`(!:
!)"%),>}o
/** RcG0 8p.)
* @param data -H^oXeN
* @param l mYN7kYR}<`
* @param i <#=N
m0S$
*/ 9_s6l
private void insertSort(int[] data, int start, int len) { ='ZRfb&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )~4II.`%^
} J?@DGp+t
} O4\Z!R60g
} U@ ?LP
} ;h6v@)#GX
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堆排序: z?/1Kj}xG
omO
S=d!o
package org.rut.util.algorithm.support; FuG4F
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import org.rut.util.algorithm.SortUtil; }jt?|dl1
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/** ]xC#rwHUC
* @author treeroot n~"$^Vr
* @since 2006-2-2 <?-YTY|
* @version 1.0 w{[=l6L m
*/ 4%4avEa"w
public class HeapSort implements SortUtil.Sort{ 1_fZm+oW!
'w>_+jLT
/* (non-Javadoc) ~\ ,w {
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fbyQjvURnC
*/ KoE8Mp
public void sort(int[] data) { T{V/+RM
MaxHeap h=new MaxHeap(); v(*C%.M)
h.init(data); Tus}\0/i>
for(int i=0;i h.remove(); |b-9b&
System.arraycopy(h.queue,1,data,0,data.length); `p;eIt
} M;cO0UIwO
0&qr
private static class MaxHeap{ GoA4f3
z,qRcO&
void init(int[] data){ $vHU$lZ/W
this.queue=new int[data.length+1]; Zfk*HV#\
for(int i=0;i queue[++size]=data; R1nJUOE4w^
fixUp(size);
RZM"~ 0
} }I3gU
} G+B~Ix-
M02uO`Y9
private int size=0; 4S~o-`&W
t+5E#!y
private int[] queue; mj|)nOd
j4?@(u9;j
public int get() { q@b|F-
return queue[1]; \V9Z#>
} -.g|l\
NCxqh <
public void remove() { RoCfJ65
SortUtil.swap(queue,1,size--); Hzrtlet
fixDown(1); [:xiZ
} ~m|Mg9-
file://fixdown KIR'$ 6pn~
private void fixDown(int k) { M?= ;JJ:
int j; da1]mb=4 5
while ((j = k << 1) <= size) { DI!V^M[~u
if (j < size %26amp;%26amp; queue[j] j++; $P1O>x>LIL
if (queue[k]>queue[j]) file://不用交换 *x)Ozfe
break; UzXE_S
SortUtil.swap(queue,j,k); pO8ePc@=D
k = j; >iS`pb
} Yvn\xph3
} XU+<?%u}z
private void fixUp(int k) { vG \a1H
while (k > 1) { SQeRSz8bK4
int j = k >> 1; YF+n
b.0.
if (queue[j]>queue[k]) dw.F5?j`b
break; Wf{O[yL*
SortUtil.swap(queue,j,k); V([~r,
k = j; kdb(I@6
} F4<O2!V
} ?<G]&EK~~]
e/->_T(I
} .VTy[|o
K}6dg<
} Cy*|&=>j
l>Ub!^;
SortUtil: )lJao
F)z;Z6{t4
package org.rut.util.algorithm; ^$&k5e/}C
rDm'Z>nTf
import org.rut.util.algorithm.support.BubbleSort; VCtH%v#S;.
import org.rut.util.algorithm.support.HeapSort; PjN =k;
import org.rut.util.algorithm.support.ImprovedMergeSort; ',GS#~
import org.rut.util.algorithm.support.ImprovedQuickSort; 4t)%<4
import org.rut.util.algorithm.support.InsertSort; %pXAeeSY`;
import org.rut.util.algorithm.support.MergeSort; <C9 XX~
import org.rut.util.algorithm.support.QuickSort; [F5h
import org.rut.util.algorithm.support.SelectionSort; ""s]zNF}
import org.rut.util.algorithm.support.ShellSort; `vc
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b)9'bJRvU
/** S(\9T1DVe
* @author treeroot -=.V
'
* @since 2006-2-2 ?<6CFH]
* @version 1.0 l4TpH|k
*/ S1/`th
public class SortUtil { w[6J
`
public final static int INSERT = 1; : Sq?a0!S
public final static int BUBBLE = 2; 0%)i<a!_Z
public final static int SELECTION = 3; ~4?9a(>3
public final static int SHELL = 4; V138d?Mm
public final static int QUICK = 5; Z3!f^vAi&
public final static int IMPROVED_QUICK = 6; WD'#5]#Y
public final static int MERGE = 7; 7Sz?S_N/j
public final static int IMPROVED_MERGE = 8; PQ@L+],C
public final static int HEAP = 9; E*?<KZe"
[o*7FEM|<
public static void sort(int[] data) { L28*1]\Jh
sort(data, IMPROVED_QUICK); ;Jd3u
-
} 6\61~u ~
private static String[] name={ I|# 5NE6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W+*5"h
}; *m2=/Sh
F#|:`$t
private static Sort[] impl=new Sort[]{ ,t)x{I;C)
new InsertSort(), U35AX9/
new BubbleSort(), \;rYo.+
new SelectionSort(), lC=~$c:
new ShellSort(), ;(}V"i7Hu
new QuickSort(), 5wUUx#
new ImprovedQuickSort(), ?8W("W
new MergeSort(), g#]wLm#
new ImprovedMergeSort(), @y31NH(
new HeapSort() waKT{5k
}; "QvmqI>
QMEcQV>
public static String toString(int algorithm){ (|wz7AY2
return name[algorithm-1]; R0oKbs{
} ;W>Y:NCrp
^( Rvk
public static void sort(int[] data, int algorithm) { ]0L&v7[
impl[algorithm-1].sort(data); y1=NF
} b,KcBQ.
*!^<m0
public static interface Sort { X*,Kb(3
public void sort(int[] data); =!m}xdTP
} -gQCn>"
vky .^
public static void swap(int[] data, int i, int j) { A{B/lX)
int temp = data; XNgDf3T
data = data[j]; w>b-} t
data[j] = temp; JJRK7\~$
} #lU9yv
} }-~T<egF