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。 u@Hz7Q}
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插入排序: [*
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package org.rut.util.algorithm.support; =Kj{wA
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import org.rut.util.algorithm.SortUtil; o;@~uU
/** aM~IRLmK
* @author treeroot U'=8:&
* @since 2006-2-2 8?Rp2n*o
* @version 1.0 kL DpZ{
*/ -,yp?<
public class InsertSort implements SortUtil.Sort{ F\eQV<
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/* (non-Javadoc) Va )W[I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v~ >Bbe
*/ C>|.0:[%
public void sort(int[] data) { o< @![P
int temp; lTC0kh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ps'_Y<@
} kWW2N0~$
} %,WH*")
} u\ _yjv#
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} SnG(/1C8
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冒泡排序: :\[l~S
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package org.rut.util.algorithm.support; P")I)>Q6
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import org.rut.util.algorithm.SortUtil; glLVT
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/** ^=eC1bQA
* @author treeroot N# }A9t
* @since 2006-2-2 opH!sa@U
* @version 1.0 Cn/WNCzst&
*/ +(2$YJ35
public class BubbleSort implements SortUtil.Sort{ @<P2di
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/* (non-Javadoc) X$5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :.5l
*/ VgVDTWs7
public void sort(int[] data) { aVu!Qk=Z/
int temp; %rrA]\C'
for(int i=0;i for(int j=data.length-1;j>i;j--){ u9~5U9]O%6
if(data[j] SortUtil.swap(data,j,j-1); a
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} %>$<s<y
} jRjeL'"G
} F
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} &:l-;7d
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} e' M&Eh
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选择排序: hnFpC1TO
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package org.rut.util.algorithm.support; ./ {79
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import org.rut.util.algorithm.SortUtil; 5hmfdj6
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/** Ms|c"?se
* @author treeroot SO6)FiPy!n
* @since 2006-2-2 ^:-GPr
* @version 1.0 ;~<To9O
*/ 3A`Gx#
public class SelectionSort implements SortUtil.Sort { l^	d
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/* os{ iY
* (non-Javadoc) pA*C|g
* D#LV&4e>.E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f7a4E+}
*/ d#v@NuO6
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public void sort(int[] data) {
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int temp; U|3!ixk>>w
for (int i = 0; i < data.length; i++) { s A,bR|
int lowIndex = i; W#bYz{s.
for (int j = data.length - 1; j > i; j--) { -~{Z*1`,
if (data[j] < data[lowIndex]) { ~snj92K
lowIndex = j; LJ[zF~4#
} Oin9lg-jR
} N;
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SortUtil.swap(data,i,lowIndex); F_*']:p
} gko=5|c,@
} p{L;)WTI
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} #r9+thyC
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Shell排序: |H
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package org.rut.util.algorithm.support; Y ]([K.I=
s-IE}I?;
import org.rut.util.algorithm.SortUtil; w||t3!M+n
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/** {<ShUN
* @author treeroot ~3 :VM_
* @since 2006-2-2 `a&L
* @version 1.0 .u)KP*_
*/ )P(S:x'b0
public class ShellSort implements SortUtil.Sort{ \< .BN;t{
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/* (non-Javadoc) XKTDBaON
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P7-k!p"
*/ %<>:$4U@]
public void sort(int[] data) { B!Wp=9)G
for(int i=data.length/2;i>2;i/=2){ sLA.bp.O
for(int j=0;j insertSort(data,j,i); ZhY{,sy?QO
} L"'=[O~
} Tm`@5
insertSort(data,0,1); 4C`RxQJM
} h-PJC/>
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/** L~5f*LE$1
* @param data GUu8 N
* @param j Gt*<Awn8
* @param i 'aEK{#en
*/ 'KjH|u
private void insertSort(int[] data, int start, int inc) { W_wC"?A%
int temp; =u2~=t=LV
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Qp<*or@
} *R+M#l9D`
} 7;p/S#P:
} _AF$E"f@
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} o*204BGB
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快速排序: gba1R
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package org.rut.util.algorithm.support; yr+QV:oVA
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import org.rut.util.algorithm.SortUtil; ky|k g@n{
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/** #fF5O2E'3
* @author treeroot R>"pJbS;L
* @since 2006-2-2 ^JxVs
7
* @version 1.0 f=91
Z_M
*/ P6%qNR/ x
public class QuickSort implements SortUtil.Sort{ pImq<Z
pzRVX8
/* (non-Javadoc) dUB;ZB7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iJh{,0))g
*/ 5dv|NLl
public void sort(int[] data) { IgJG,!>h
quickSort(data,0,data.length-1); #.u&2eyqQ
} ,sj(g/hg
private void quickSort(int[] data,int i,int j){ @B0fRG y
int pivotIndex=(i+j)/2; b6;MTz*k>
file://swap 9+(6/<
SortUtil.swap(data,pivotIndex,j); uLv
WMKxGZg"
int k=partition(data,i-1,j,data[j]); ,&,XcbJ
SortUtil.swap(data,k,j); 0Bgj.?l
if((k-i)>1) quickSort(data,i,k-1); -ik$<>{X
if((j-k)>1) quickSort(data,k+1,j); E
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} lw8t#_P
/** N\s-{7K
* @param data S9*68l
* @param i ,V!Wo4M
* @param j ~9YEb
* @return xGOmvn^lQ
*/ hH$9GL{H
private int partition(int[] data, int l, int r,int pivot) { `<@ "WSn
do{ n2o)K;wW+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pQZ`dS\
SortUtil.swap(data,l,r); I<W<;A
} K
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while(l SortUtil.swap(data,l,r); 2ETv H~23
return l; q( EN]W],
} <QgpePyoN
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} SPe%9J+
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改进后的快速排序: <D& Ep
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package org.rut.util.algorithm.support; LGtw4'yr
//3fgoly
import org.rut.util.algorithm.SortUtil; "Qc4v@~)
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/** 1#|lt\T
* @author treeroot kTzO4s?
* @since 2006-2-2 <v\$r2C*
* @version 1.0 UZ-pN_!Z:
*/ ;xFB
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public class ImprovedQuickSort implements SortUtil.Sort { <Pf4[q&wM
P=P']\`p+
private static int MAX_STACK_SIZE=4096; 00-2u~D&
private static int THRESHOLD=10; 0<<ATw$aQ
/* (non-Javadoc) #l* w=D?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JS?%zj&@
*/ 8B "^}y\0
public void sort(int[] data) { s[7/w[&
int[] stack=new int[MAX_STACK_SIZE]; Ew;AYZX
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int top=-1; hq&9S{Ep
int pivot; ]R^xO;g'
int pivotIndex,l,r; PgP\v -.
M4
}))
stack[++top]=0; ]W`M
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stack[++top]=data.length-1; _$vbb#QXZG
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while(top>0){ ,t*H: *
int j=stack[top--]; +'w6=qI
int i=stack[top--]; ^mut-@ N9
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pivotIndex=(i+j)/2; Fl(j,B6Z
pivot=data[pivotIndex]; " w /Odd
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SortUtil.swap(data,pivotIndex,j); <|E*aR|M
&:}WfY!hX
file://partition n-GoG(s..b
l=i-1; JPZH%#E(
r=j; o>]z~^c
do{ j]mnH`#BL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <a+@4d;
SortUtil.swap(data,l,r); _0ZBG(
} UQP>yuSx
while(l SortUtil.swap(data,l,r); fgA-+y
SortUtil.swap(data,l,j); .jbxA2
_1YC9}
if((l-i)>THRESHOLD){ 9.9B#?
stack[++top]=i; Jt}#,I,B
stack[++top]=l-1; I;UT;/E2
} (bB"6
#TI
if((j-l)>THRESHOLD){ Bf[`o<c
stack[++top]=l+1; u&o$2
'8
stack[++top]=j; +A$>F@u
} m|OB_[9
\#N?
} gr@Ril^
file://new InsertSort().sort(data); *|@386\
insertSort(data); Cm"S=gV
} & Yx12B\
/** z"Cyjmg"
* @param data Pl2eDv-y
*/ H_aG\
private void insertSort(int[] data) { (I+e@UUiL
int temp; pEW~zl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vWa\8y f
} O*W<za;
} mwI7[I2q
} ~zWLqnS}
S a}P
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} YPCitGBl
jCIY(/
归并排序: A<( DYd1H
[Q/kNK
package org.rut.util.algorithm.support; (qz)3Fa
#~.RJ%
import org.rut.util.algorithm.SortUtil; @S>;t)\J
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/** L1y71+iqU
* @author treeroot 1083p9Uh
* @since 2006-2-2 `82Dm!V
* @version 1.0 qL[SwEc
*/ h@y>QhYU0
public class MergeSort implements SortUtil.Sort{ /{W6]6^
RAuVRm=E
/* (non-Javadoc) )8SWU)/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @g]EY&Uzl
*/ uv^x
public void sort(int[] data) { _-9cGm v
int[] temp=new int[data.length]; nb6Y/`G
mergeSort(data,temp,0,data.length-1); >VX'`5r>uw
} #VVfHCy
*JQ*$$5
private void mergeSort(int[] data,int[] temp,int l,int r){ c&
bms)Jwa
int mid=(l+r)/2; !ab ef.%:
if(l==r) return ; !]RSG^%s{
mergeSort(data,temp,l,mid); s{j A!T}
mergeSort(data,temp,mid+1,r); ^5(d^N
for(int i=l;i<=r;i++){ TU*EtE'g/
temp=data; Chx+p&!
} vAqj4:j
int i1=l; \k{[HfVvn
int i2=mid+1; W8;!rFW
for(int cur=l;cur<=r;cur++){ G#^0Bh&
if(i1==mid+1) bSz7?NAp
data[cur]=temp[i2++]; VxARJ*4=Y
else if(i2>r) 5Dz$_2oM3
data[cur]=temp[i1++]; bS954d/
else if(temp[i1] data[cur]=temp[i1++]; "Aw)0a[j1
else '3WtpsKA
data[cur]=temp[i2++]; BMu Efa^
} +mzLOJed
} D}j`T
XoL DqN!
} QCE7VV1Rw
Xc}XRKiy{
改进后的归并排序: G -+!h4p
h:r?:C>n
package org.rut.util.algorithm.support; n+te5_F
rjO{B`sV*
import org.rut.util.algorithm.SortUtil; 8&|
o
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/** X;Sb^c"j1
* @author treeroot N' R^gL
* @since 2006-2-2 #jW=K&;
* @version 1.0 ^\?Rh(pu
*/ ;l
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public class ImprovedMergeSort implements SortUtil.Sort { 5)eM0,:
$?bD55
private static final int THRESHOLD = 10; r~ 2*'zB
+>K&zS
/* Qz#By V:
* (non-Javadoc) VJ&<6
* 'wG1un;t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r9'[7b1l
*/ o5NmNOXm
public void sort(int[] data) { #?jsC)
int[] temp=new int[data.length]; d(d<@cB9
mergeSort(data,temp,0,data.length-1); MJ1qU}+]
} Ui`{U
%oTBh* K'o
private void mergeSort(int[] data, int[] temp, int l, int r) { P=jsOuW
int i, j, k; 'yq?xlIj
int mid = (l + r) / 2; 1BU97!
if (l == r) $5)#L$!,]
return; YZ4`b-
if ((mid - l) >= THRESHOLD) dX@ic,?
mergeSort(data, temp, l, mid); ]h(Iun
else PENB5+1OK
insertSort(data, l, mid - l + 1); GyN|beou
if ((r - mid) > THRESHOLD) ~1wt=Ln>
mergeSort(data, temp, mid + 1, r); {L%J DJ
else "5~?`5Ff
insertSort(data, mid + 1, r - mid); `@],J
PR:B6 F8
for (i = l; i <= mid; i++) { J'X}6Q
temp = data;
r+E!V'{C
} O0L]xr
for (j = 1; j <= r - mid; j++) { vHcl7=)Q
temp[r - j + 1] = data[j + mid]; !6=;dX
} Jj>Rzj!m
int a = temp[l]; l!88|~
int b = temp[r]; K}re{y
for (i = l, j = r, k = l; k <= r; k++) { '`k7l7I[@
if (a < b) { = +MF@ 4
data[k] = temp[i++]; M1-tRF
a = temp; V=8db%^
} else { 8p%0d`sX
data[k] = temp[j--]; %QEBY>|lI
b = temp[j]; uD=Kar
} `~)?OTzU#
} 7wh4~
} it\$Pih]
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/** D r(0w{5
* @param data g:Qq%'
* @param l L.'61ZU
* @param i uK" T~
*/ mc?IM(t
private void insertSort(int[] data, int start, int len) { HAK,z0/
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gkuqe3
} 1*hE bO
} $TXiWW+
} !VWA4 e!+
} U|Fqna
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堆排序: $uTrM8
(2H
GV+Dg
package org.rut.util.algorithm.support; Zo&i0%S\E
1(BLdP3&
import org.rut.util.algorithm.SortUtil; #G]IEO$M6
ik(YJw'i7E
/** ~@c<5 -`{
* @author treeroot .S54:vs
* @since 2006-2-2 C`;igg$t_
* @version 1.0 Bu=1-8@=qs
*/ #[=kQ&
public class HeapSort implements SortUtil.Sort{ ]?=87w
`qs,V
/* (non-Javadoc) L3Y,z3/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >1!u]R<3
*/ ulsU~WW7r
public void sort(int[] data) { p}!i_P
MaxHeap h=new MaxHeap(); f9u=h}
h.init(data); h-ii-c?R@0
for(int i=0;i h.remove(); sF!#*Y
System.arraycopy(h.queue,1,data,0,data.length); $XQgat@&]
} @l j|
\o[][R#D
private static class MaxHeap{ F@Sk=l(
95'+8*YCY
void init(int[] data){ 9Q,>I6`l
this.queue=new int[data.length+1]; nu\AEFT
for(int i=0;i queue[++size]=data; ]6Iu\,#J
fixUp(size); ~4~r
} t~ {O)tt
} (y]Z *p:EW
f1aZnl
private int size=0; gV.? Myy
5{b;wLi$X2
private int[] queue; 4q] 6[/
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public int get() { Xsa8YP9
return queue[1]; 'EIe5Op
} +ytP5K7
m'}`+#C%)
public void remove() { }
TUr96
SortUtil.swap(queue,1,size--); v)O0i2
fixDown(1); F 6sQeU
} KE,.Evyu=
file://fixdown =i vlS
private void fixDown(int k) { cVx SO`jZw
int j; %mss{p!d6
while ((j = k << 1) <= size) { K*5gb^Ul
if (j < size %26amp;%26amp; queue[j] j++; a&JY x
if (queue[k]>queue[j]) file://不用交换 _0$>LWO~
break; Pi"?l[T0
SortUtil.swap(queue,j,k); 1_{ e*=/y
k = j; b/[X8w'VP
} T`@brL
} cz IEkm
private void fixUp(int k) { ng+sK
while (k > 1) { JfkEJk<
int j = k >> 1; 5xr>B7MRM?
if (queue[j]>queue[k]) TP#Ncqh
break; M 0}r)@
SortUtil.swap(queue,j,k); Pteti
k = j; qnyacI
} EXeV@kg
} 7Ku&Q<mi
Vp; `!+z"
} 0#Gm# =F
e~gNGr]L/
} EG^
rh;
LodP,\T
SortUtil: (t3gNin
:j~4mb?$
package org.rut.util.algorithm; %`pi*/(
=LIb0TZ2
import org.rut.util.algorithm.support.BubbleSort; 5-0&`,
import org.rut.util.algorithm.support.HeapSort; }>AA[ba"'
import org.rut.util.algorithm.support.ImprovedMergeSort; }U=}5`_]D
import org.rut.util.algorithm.support.ImprovedQuickSort; :I"22EH
import org.rut.util.algorithm.support.InsertSort; Ie!">8."
import org.rut.util.algorithm.support.MergeSort; tc.|mIvw
import org.rut.util.algorithm.support.QuickSort; R#Yj%$E1
import org.rut.util.algorithm.support.SelectionSort; #l+Rs3T:
import org.rut.util.algorithm.support.ShellSort; xX<T5Ls
"D>/#cY1/
/** id+EBVHAd
* @author treeroot d^54mfgI
* @since 2006-2-2 P//nYPyzg
* @version 1.0 vq9O|E3
*/ uj\&-9gEi
public class SortUtil { hFtjw6
public final static int INSERT = 1; ~x4]p|)</
public final static int BUBBLE = 2; 3&E@#I^],
public final static int SELECTION = 3; vMX\q
public final static int SHELL = 4; ^vV AuO
public final static int QUICK = 5; CD#U`jf
public final static int IMPROVED_QUICK = 6; FeZW S>N
public final static int MERGE = 7; ;D-k\kv
public final static int IMPROVED_MERGE = 8; ]X7_ji(l,
public final static int HEAP = 9;
Jk`l{N
;){ZM,Ox
public static void sort(int[] data) { h)W#
sort(data, IMPROVED_QUICK); fTX|vy<EMI
} )BaGY
private static String[] name={ s/>0gu]A8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dpge:Qhr
}; Yc)Dx3
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