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。 {G:y?q'z
插入排序: !rM~
1jl!VU6
package org.rut.util.algorithm.support; E6A"Xo
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import org.rut.util.algorithm.SortUtil; G-Tmk7m
/** .z`70ot?
* @author treeroot s3Vb2C*
* @since 2006-2-2 XWp8[Cxs
* @version 1.0 |:=o\eu&
*/ /8h=6"
public class InsertSort implements SortUtil.Sort{ H0Pxw
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~y!'\d>q<
/* (non-Javadoc) hJ'H@L7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6@J=n@J$p
*/ ((k"*f2%
public void sort(int[] data) { c~Ka) dF|
int temp; 7w/IHM L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m.e]tTe
} )?*YrWO{
} I9*cEZ!l=e
} 7z{wYCw
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P
} %SM;B-/zHt
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冒泡排序: senK(kbc
@LKQ-<dZG
package org.rut.util.algorithm.support; PLyity-L[7
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import org.rut.util.algorithm.SortUtil; Zh<;r;2
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/** iEr,ly
* @author treeroot `
R6`"hx$
* @since 2006-2-2 \2i7\U
* @version 1.0 86r5!@WN
*/ >1~
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public class BubbleSort implements SortUtil.Sort{ 9Eyx Ob
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/* (non-Javadoc) 9oWU]A\k>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0mY Y:?v
*/ 5</$dcG
public void sort(int[] data) { Wy}I"q[~So
int temp; @w[i%F,&`
for(int i=0;i for(int j=data.length-1;j>i;j--){ iq(PC3e`V
if(data[j] SortUtil.swap(data,j,j-1); 'pdTV:]zA
} @X2*O9
} |p11Jt[
} {*ak>Wud
} $cCC
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[. 5m}V
} T #\
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选择排序: x *Lt]]A
+&Ld`d!n
package org.rut.util.algorithm.support; tgK
I
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import org.rut.util.algorithm.SortUtil; dj0; tQ=C
tMIYVHGy
/** vT'Bs;QR
* @author treeroot !>8~R2
* @since 2006-2-2 (yOkf-e2y
* @version 1.0 1o_kY"D<
*/ 0+1wi4wy/
public class SelectionSort implements SortUtil.Sort { 1uw#;3<L
E9HMhUe
/* > VG
* (non-Javadoc) ~GaGDS\V
* AZtS4]4G)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a|aVc'j
*/ tZrc4$D-
public void sort(int[] data) { kNEEu!G
int temp; [I $+wWW_
for (int i = 0; i < data.length; i++) { C|(A/b
int lowIndex = i; ^.SYAwL
for (int j = data.length - 1; j > i; j--) { C_.9qo]DT7
if (data[j] < data[lowIndex]) { ]b/]^1-(b
lowIndex = j; )*,/L <
} u2V-V#jS
} }I"C4'(a
SortUtil.swap(data,i,lowIndex); I5$P9UE+^9
} 'Ts:.
} yVd^A2
o\AnM5
} $`=p]
s[1ao"sZ^
Shell排序: Wgq|Q*
IUcL*
package org.rut.util.algorithm.support; NWBYpGZx
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import org.rut.util.algorithm.SortUtil; [M_{~1xX
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/** ^E
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* @author treeroot z3fv}_\z
* @since 2006-2-2 INZVe(z
* @version 1.0 yqK4 "F&
*/ 6K $mW
public class ShellSort implements SortUtil.Sort{ 8!g
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S)rZE*~2
/* (non-Javadoc) Nd_fjB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qy,^'fSN
*/ B~Q-V&@o
public void sort(int[] data) { |m19fg3u
for(int i=data.length/2;i>2;i/=2){ "cH RGJG#
for(int j=0;j insertSort(data,j,i); <P9fNBGa
} "q4tvcK.
} bdUPo+
insertSort(data,0,1); g8),$:Uw
} )^h6'h`
bQll;U^A
/** B*7kX&Uq
* @param data I-7LT?r
* @param j .b:!qUE^
* @param i \>L,X_DL
*/ r );R/)&
private void insertSort(int[] data, int start, int inc) { e5=d
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int temp; 9N]Xa
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wN2+3LY{
} I0=_=aZO(
} N!A20Bv
} D-3[#~MV
s>rR\`
} ejRK-!
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快速排序: y>{:[L9*
-!\3;/
package org.rut.util.algorithm.support; UN I< r
I Mgd2qIC
import org.rut.util.algorithm.SortUtil; p:,Y6[gMo
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/** d{
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* @author treeroot W<Uu.Y{sG
* @since 2006-2-2 $o"nTl
* @version 1.0 k<1yv$/mW
*/ QWmE:F[M~
public class QuickSort implements SortUtil.Sort{ BT_]=\zi
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/* (non-Javadoc) ~/:vr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h@)U,&
*/ h#rP]o@
public void sort(int[] data) { O--p)\
quickSort(data,0,data.length-1); XLpP*VH3
} [)H 6`w
private void quickSort(int[] data,int i,int j){ (Guzj*1 2
int pivotIndex=(i+j)/2; R^Rc!G}
file://swap >hKsj{=R7
SortUtil.swap(data,pivotIndex,j); z,HhSW?&^
~ KK9aV{
int k=partition(data,i-1,j,data[j]); B|(g?
SortUtil.swap(data,k,j); ! VwU=5
if((k-i)>1) quickSort(data,i,k-1);
Xo^8o0xi
if((j-k)>1) quickSort(data,k+1,j); AXfU$~
}v1wpv/b(
} pjl%Jm
/** CB7dr&>
* @param data N'^>pSc4W|
* @param i :}Jx
* @param j '1<Z"InU
* @return nx9PNl@?V
*/ zVh yAf
private int partition(int[] data, int l, int r,int pivot) { 570Xk\R@M
do{ jiI=tg;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); # @\3{;{R
SortUtil.swap(data,l,r); wcHk]mLM
} %cNN<x8
while(l SortUtil.swap(data,l,r); ;5a$OM
return l; 7KT*p&xm
} On C)f
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} + a#&W}K
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改进后的快速排序: Rq4;{a/j
>Wg=
Tuef
package org.rut.util.algorithm.support; rOIb9:
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import org.rut.util.algorithm.SortUtil; J,a&"eOZ
j KU2
/** mq:k|w^6
* @author treeroot Xz]l#w4Pp
* @since 2006-2-2 u09Tlqh0 3
* @version 1.0 J%|?[{rO{'
*/ U }2@
public class ImprovedQuickSort implements SortUtil.Sort { W5jwD
, 3R=8
private static int MAX_STACK_SIZE=4096; z%&FLdXgW+
private static int THRESHOLD=10; o$_0Qs$
/* (non-Javadoc) GT>'|~e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <J%qzt}
*/ T/$gnn
public void sort(int[] data) { o<g?*"TRh
int[] stack=new int[MAX_STACK_SIZE]; /%$Zm^8c
6]4~]!
int top=-1; +cpb!YEAb
int pivot; tldT(E6
int pivotIndex,l,r; [i.@q}c~E
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stack[++top]=0; }_Bo:*9B-o
stack[++top]=data.length-1; lH fZw})d
"+DA)K
while(top>0){ ulR yt^bx|
int j=stack[top--]; .EYL
int i=stack[top--]; ^Z (cVg
/E>;O47a
pivotIndex=(i+j)/2; $-_" SWG.
pivot=data[pivotIndex]; >}k*!J|
BRFsw`c
SortUtil.swap(data,pivotIndex,j); DJ ru|2
&9jJ\+:7
file://partition -:}vf?
l=i-1; b,~'wm8:A
r=j; N$=YL
@m8
do{ P0N/bp2Uy
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UrniJB]
SortUtil.swap(data,l,r); :kZ]Swi 5
} *h^->+0n
while(l SortUtil.swap(data,l,r); 'afW'w@
SortUtil.swap(data,l,j); m:_#kfC&K"
v[CR$@Y
if((l-i)>THRESHOLD){ 0%xk tf
stack[++top]=i; Nr4Fp`b8
stack[++top]=l-1; Ff<cY%t
} 3mgvWR
if((j-l)>THRESHOLD){ k-$Acv(
stack[++top]=l+1; + V=<vT
stack[++top]=j; d`\SX(C
} 5 nt3gVy
01Jav~WR
} +\dVC,,=^g
file://new InsertSort().sort(data); $G=^cNB|JB
insertSort(data); C&O8fNB_
} AArLNXzVW
/** l&& i`
* @param data LP3#f{U
*/ >^8O :.
private void insertSort(int[] data) { kV-<[5AWW
int temp; at>_EiS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T*p7[}#
} _ep&`K
} j;$f[@0o
} ,~L*N*ML
zU5@~J
} ? [Yn<|
|:)Bo<8
归并排序: wXNng(M7
)St0}?I~
package org.rut.util.algorithm.support; 6Dd>ex!-A
k_g@4x1y*
import org.rut.util.algorithm.SortUtil; 6 `6I<OJ\
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/** {\Pk;M{Y&
* @author treeroot +;,{`*W+N
* @since 2006-2-2 '[
c-$X2Ak
* @version 1.0 ^P^"t^O
*/ RqROl!6
public class MergeSort implements SortUtil.Sort{ <h(AJX7wsD
fWP]{z`
/* (non-Javadoc) ^%oH LsY9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h(WlJCln
*/ <n_?$ TJ
public void sort(int[] data) { VnuG^)S
int[] temp=new int[data.length]; %+r(*Q+0$f
mergeSort(data,temp,0,data.length-1); qMaO1cE\
} hC-uz _/3
P, x"![6
private void mergeSort(int[] data,int[] temp,int l,int r){ |E13W
int mid=(l+r)/2; k(f),_
if(l==r) return ; +5fB?0D;
mergeSort(data,temp,l,mid); F%L"Q>aHW
mergeSort(data,temp,mid+1,r); n%r>W^2j
for(int i=l;i<=r;i++){ lG6&uMvo
temp=data; lB}?ey
} )~M@2;@L
int i1=l;
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int i2=mid+1; mmQC9nZ
for(int cur=l;cur<=r;cur++){ tFcQ.1
if(i1==mid+1) Q_T,=y
data[cur]=temp[i2++]; d 6Y9D=O
else if(i2>r) ['QhC( {
data[cur]=temp[i1++]; [,bJKz)a
else if(temp[i1] data[cur]=temp[i1++]; kwi$%
else 'q}Ud10c
data[cur]=temp[i2++]; pyf'_
} mR.j8pi
} @Z0. }}Y
ZW M:Wj192
} 5ncW
s)
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改进后的归并排序: +s}!+I8P
D[W`
q#W
package org.rut.util.algorithm.support; "]^U(m>f
w !kk(QMV
import org.rut.util.algorithm.SortUtil; /5%'q~
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/** &[`24Db
* @author treeroot Wz^;:6F
* @since 2006-2-2 oD%n}
* @version 1.0 D~inR3(}
*/ ~N/%R>(v
public class ImprovedMergeSort implements SortUtil.Sort { Sh;`<Ggi~
?Gf'G{^}
private static final int THRESHOLD = 10; K*^'tltJ
H28-;>'`
/* M"mvPr9
* (non-Javadoc) WLWfe-
* ^PdD-tY<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qY&(O`?m&
*/ [6@bsXiw
public void sort(int[] data) { Sw$&E
int[] temp=new int[data.length]; [1~3\-Y
mergeSort(data,temp,0,data.length-1); %B&O+~
} .KYs5Qu
TrZ!E`~
private void mergeSort(int[] data, int[] temp, int l, int r) { !B[Y?b:
int i, j, k; ym
p*:lH(
int mid = (l + r) / 2; Bl)D/
if (l == r) '>OEQU5-
return; )1 @v<I
if ((mid - l) >= THRESHOLD) $_%
mergeSort(data, temp, l, mid); n2aUj(Zs=
else y2k's
insertSort(data, l, mid - l + 1); %AV3eqghCg
if ((r - mid) > THRESHOLD) UB] tKn
mergeSort(data, temp, mid + 1, r); depCqz@
else 9[t-W:3c7
insertSort(data, mid + 1, r - mid); dyqk[$(
?n<sN"
for (i = l; i <= mid; i++) { w8>lWgN
temp = data; 7d{xXJ-
} ^`-Hg= d
for (j = 1; j <= r - mid; j++) { %jUZc:06
temp[r - j + 1] = data[j + mid]; E.'6p \
} .K940& Ui
int a = temp[l]; qoan<z7
int b = temp[r]; `U?S 9m
for (i = l, j = r, k = l; k <= r; k++) { mGz'%?zj
if (a < b) { sS)tSt{C
data[k] = temp[i++]; X"8$,\wX,
a = temp; kPEU }Kv
} else { +Kmxo4p
data[k] = temp[j--]; uA?a
DjA
b = temp[j]; }zo-%#
} >iJxq6!
} w6 Y+Y;,'f
} 8}z PDs
'o_ RC{k2"
/** U ;4;>
* @param data xZAg
* @param l ^')4RU
* @param i HDo=W qG
*/ _#<l -R`
private void insertSort(int[] data, int start, int len) { *nM.`7g*[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~9fTs4U
} Z,3CMWHg
} G*v,-O
} _qit$#wK;
} { F0"U=
<^Q`
y
堆排序: EU5(s*A
$YBH;^#
package org.rut.util.algorithm.support; ieyqp~+|4$
c1]\.s
import org.rut.util.algorithm.SortUtil; IxP$lx
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/** =F*{O=
* @author treeroot 0Oq5;5
* @since 2006-2-2 m[5ed1+
* @version 1.0 lKirc2
*/ UR`pZ.U?
public class HeapSort implements SortUtil.Sort{ Tq6@
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HV3D$~g F
/* (non-Javadoc) wZ8LY;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Q^Vm3h
*/ k/xNqN(
public void sort(int[] data) { BW)t2kR&
MaxHeap h=new MaxHeap(); zHj_q%A
h.init(data); KrECAc
for(int i=0;i h.remove(); @0:mP
System.arraycopy(h.queue,1,data,0,data.length); }>Lz\.Z/+[
} Z*5]qh2r8
z:$TW{%M
private static class MaxHeap{ P[cGCmM
YAF0I%PYU
void init(int[] data){ qr/N ?,
this.queue=new int[data.length+1]; 3TD!3p8
for(int i=0;i queue[++size]=data; l5k]voG
fixUp(size); 8j%lM/ v
} 2wh{[Q2f
} 5a l44[
cW $~86u"C
private int size=0; 9;c]_zt
-E!V;Tgc%U
private int[] queue; h9{'w
l\-(li
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public int get() { YwM;G
g3
return queue[1]; E?f*Z{~,
} !FnH;
v3jx2Z
public void remove() { UUql"$q
SortUtil.swap(queue,1,size--); yIThzyS
fixDown(1); (au7wI{
} 7<ES&ls_
file://fixdown q}R"
private void fixDown(int k) { |7T!rnr
int j; jZY9Lx8o
while ((j = k << 1) <= size) { ;c>Rjg&[
if (j < size %26amp;%26amp; queue[j] j++; 'uOp?g' 7
if (queue[k]>queue[j]) file://不用交换 Ie;}k;?-
break; seH#v
SortUtil.swap(queue,j,k); :!EOg4%i
k = j; 4a~9?}V:
} 4B8{\"6
} pRdO4?l
private void fixUp(int k) { mk~Lkwl
while (k > 1) {
!*xQPanL
int j = k >> 1; Ts:pk
if (queue[j]>queue[k]) WS0RvBvb
break; Wm ?RB0
SortUtil.swap(queue,j,k); BPKeG0F7
k = j; U`"nX)$
} Ih95&HsdC
} c~Hq.K$d
LNU9M>
} V#6`PD6
0?j+d8*
} STB=#z
oM-@B'TK
SortUtil: 4d3PF`,H`
7"y"%+*/
package org.rut.util.algorithm; SIRZ_lt$r
R\=y/tw0H
import org.rut.util.algorithm.support.BubbleSort; :FdV$E]]<
import org.rut.util.algorithm.support.HeapSort; i_&&7.
import org.rut.util.algorithm.support.ImprovedMergeSort; D &wm7,
import org.rut.util.algorithm.support.ImprovedQuickSort; `}u~nu<
import org.rut.util.algorithm.support.InsertSort; -OuMC&
import org.rut.util.algorithm.support.MergeSort; j:,*Liz
import org.rut.util.algorithm.support.QuickSort; ODM<$Yo:d
import org.rut.util.algorithm.support.SelectionSort; .,x08M
import org.rut.util.algorithm.support.ShellSort; TM':G9n
]Ikj Z=
/** mvxg|<
* @author treeroot Z;i^h,j?$1
* @since 2006-2-2 ZD0Q<8%
* @version 1.0 EY!aiH6P
*/ 8DLMxG
public class SortUtil { !/$BXUrd
public final static int INSERT = 1; 5,qfr!hN,
public final static int BUBBLE = 2; ,[^P
public final static int SELECTION = 3; X;p,Wq#D'
public final static int SHELL = 4; PHD$E s
public final static int QUICK = 5; 4oOe
public final static int IMPROVED_QUICK = 6; _Oq (&I
public final static int MERGE = 7; g!%csf
public final static int IMPROVED_MERGE = 8; c66Iy"
public final static int HEAP = 9; :h3
Gk;u
VxfFk4
public static void sort(int[] data) { 7z6y n=B
sort(data, IMPROVED_QUICK); c{#lKD<7
} TZZqV8
private static String[] name={ eGLLh_V"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c-avX
}; diqG8KaK
'F[Q E9]*
private static Sort[] impl=new Sort[]{ `)H.TMI
new InsertSort(), =J?<M?ugf
new BubbleSort(), ScfW;
new SelectionSort(), 12E@9s$Z
new ShellSort(), iygdX2
new QuickSort(), 8'#%7+ "=!
new ImprovedQuickSort(), ,)Z^b$H]
new MergeSort(), Mi'eViH
new ImprovedMergeSort(), .'7o,)pJ<
new HeapSort() 'L0 2lM
}; <v[,A8Q
S3j/(BG
public static String toString(int algorithm){ M* QqiE
return name[algorithm-1]; })bTQj7
} 0 x"3
f+$/gz
public static void sort(int[] data, int algorithm) { '(u [
impl[algorithm-1].sort(data); E9226
} NP^kbF
;][1_
public static interface Sort {
[?Aq#av
public void sort(int[] data); ~Cj+6CrT
} '1r:z, o|
S)$ES6]9/
public static void swap(int[] data, int i, int j) { v=SC*
int temp = data; iQin|$F_O
data = data[j]; wTIOCj
data[j] = temp; /2?GRwU~P
} w},k~5U^s
} 0V srAV0