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。 YZJP7nN
插入排序: _!vbX
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package org.rut.util.algorithm.support; L{Zy7O]"d
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import org.rut.util.algorithm.SortUtil; jC7XdYp
/** cK/odOi
* @author treeroot sbIhg/:ok
* @since 2006-2-2 D(GHkS*0q
* @version 1.0 $ {"St&(
*/ v2g+oKO]
public class InsertSort implements SortUtil.Sort{ @~HD<K
/PS]AM
/* (non-Javadoc) GDntGTE~sk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Un+Jz
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*/ 4h(Hy&1C
public void sort(int[] data) { 351'l7F\
int temp; YiMecu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8h2?Q
} -|mRJVl8
} hR{Zh>
} osI(g'Xb
6.=b^6MV
} D.f=!rT7E7
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冒泡排序: YO61 pZY
W1(ziP'6
package org.rut.util.algorithm.support; @x4Dt&:"
p^!p7B`qe.
import org.rut.util.algorithm.SortUtil; aKO@_R,:
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/** } U.B$4Q
* @author treeroot GC2<K
* @since 2006-2-2 8&bj7w,K
* @version 1.0 FT=>haN
*/ 1C{n\_hR
public class BubbleSort implements SortUtil.Sort{ $%'z/'o!
!8].Z"5J
/* (non-Javadoc) $Tza<nA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *qBZi;1
*/ cCs:z
public void sort(int[] data) { hFv}JQJw<
int temp; kzu=-@s
for(int i=0;i for(int j=data.length-1;j>i;j--){ m` cG&Ar5
if(data[j] SortUtil.swap(data,j,j-1); 5**xU+&
} C/=ZNl9"fn
} 511q\w M
} QkbN2mFv%
} kLP^q+$u)!
2_C.-;!
} i^(<E0vS
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选择排序: Qd&j~cG@
@,vSRns
package org.rut.util.algorithm.support; VTU-'q
;Xns 9
import org.rut.util.algorithm.SortUtil; J4<*KL~a
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/** e[n>U@
* @author treeroot 4kiu*T
* @since 2006-2-2 ;A_QI>>
* @version 1.0 d
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*/ ;_!;D#:
public class SelectionSort implements SortUtil.Sort { .?qS8:yA
SL*(ZEn"
/* bZ)Jgz
* (non-Javadoc) e M}Xn^}
* WW.=>]7;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BshS@"8r
*/ %PpB$
public void sort(int[] data) { #X+)
int temp; *7ox_ R@
for (int i = 0; i < data.length; i++) { " 1Bn/Q
int lowIndex = i; b3ZPlLx6
for (int j = data.length - 1; j > i; j--) { eL.S="
if (data[j] < data[lowIndex]) { :3k(=^%G!
lowIndex = j; ][Kj^7/
} <M=K!k
} lPH]fWt<
SortUtil.swap(data,i,lowIndex); :\ S3[(FV
} `k+k&t
} 8r5j~Df
Lt)t}0
} =8]'/b
j$,`EBf`:<
Shell排序: g#e"BBm=A
Kxg09\5i
package org.rut.util.algorithm.support; wXP1tM8T
Ut<_D8Tzx
import org.rut.util.algorithm.SortUtil; ~o+u: ]
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/** /)|*Vzu
* @author treeroot _M?:N:e
* @since 2006-2-2 \ZA%"F){
* @version 1.0 !!9V0[
*/ 1\1o65en
public class ShellSort implements SortUtil.Sort{ +f+\uObi:
{w2<;YXj!
/* (non-Javadoc) QDU^yVa_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?wmr~j
*/ ^T^fowt=r
public void sort(int[] data) { |
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for(int i=data.length/2;i>2;i/=2){ [hs{{II
for(int j=0;j insertSort(data,j,i); PS>k67sI
} Lm8cY
} }hGbF"clqg
insertSort(data,0,1); ce@(Ct
} doG&qXw
Od!j+.OY<
/** ztf (.~
* @param data JMoWA0f
* @param j MVV<&jho{^
* @param i Q?vGg{>
*/ IKpNc+;p
private void insertSort(int[] data, int start, int inc) { ^NP" m
int temp; *F=wMWa
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1<lLE1fk
} mI}'8.
} tvI~?\Ylj
} GeE|&popO
4rv3D@E
}
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快速排序: # *\PU
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package org.rut.util.algorithm.support; k)'c$
ns@b0'IF]
import org.rut.util.algorithm.SortUtil; Kg9REL@,s
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/** i4AmNRs
* @author treeroot HdLVXaD/
* @since 2006-2-2 >pr{)bp G
* @version 1.0 IS"UBJ6p
*/ Z|E( !"zE9
public class QuickSort implements SortUtil.Sort{ Z?X
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b bX2D/
/* (non-Javadoc) G.1pg]P!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eo"6 \3z
*/ amOBUD5Ld`
public void sort(int[] data) { Z{&PKS
quickSort(data,0,data.length-1); W%)
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} @r'8<6hVO
private void quickSort(int[] data,int i,int j){ Q']:k}y
int pivotIndex=(i+j)/2; u.R:/H<>~
file://swap KD=T04v
SortUtil.swap(data,pivotIndex,j); Qr$uFh/y
}Z"<KF
int k=partition(data,i-1,j,data[j]); Ust>%~<
SortUtil.swap(data,k,j); Gb\}e}TB[
if((k-i)>1) quickSort(data,i,k-1); 27}k63 \
if((j-k)>1) quickSort(data,k+1,j); OP{ d(~+
'Q?nU^:F#
} a'rN&*P
/** =]E;wWC
* @param data q#F;GD
* @param i yD$rls:v<
* @param j g.Z>9(>;Y
* @return 9["yL{IPe
*/ e=QnGT*b5
private int partition(int[] data, int l, int r,int pivot) { !Tr +: SM
do{ ~"iCx+pr
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }r9f}yX9Q
SortUtil.swap(data,l,r); \,oT(p4N%M
} AS'a'x>8>,
while(l SortUtil.swap(data,l,r); 32:q'
return l; wqK>=Ri_
} [_#9PH33
iO(9#rV
} W1i Kn
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改进后的快速排序: zH.DyD5T;
J+kxb"#d
package org.rut.util.algorithm.support; A !x"*
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import org.rut.util.algorithm.SortUtil; m&EwX ^1-
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/** Da0E)
* @author treeroot Nj@k|_1
* @since 2006-2-2 :OUNZDL
* @version 1.0 h1:uTrtA
*/ HJ:s)As
public class ImprovedQuickSort implements SortUtil.Sort { 3W5|Y@0
+,gI|
private static int MAX_STACK_SIZE=4096; nxA Y]Q
private static int THRESHOLD=10; mTwz&N\
/* (non-Javadoc) JnlM0jc]`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A\CtM`
*/ P*BA
public void sort(int[] data) { x~?,Wv|cm
int[] stack=new int[MAX_STACK_SIZE]; XTUxMdN
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int top=-1; (dLt$<F
int pivot; QS4sSua
int pivotIndex,l,r; J$%mG*Y(
}3!83~Qbx
stack[++top]=0; By]XD~gcP
stack[++top]=data.length-1; 4/&Us
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while(top>0){ 5hUYxF20h8
int j=stack[top--]; Zz'(!h Uy
int i=stack[top--]; BuCU_/H
bc}U &X<
pivotIndex=(i+j)/2; 1Thr74M
pivot=data[pivotIndex]; <x,u!}5J
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SortUtil.swap(data,pivotIndex,j); Mc#uWmc 7
'>^+_|2
file://partition 7[rn
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l=i-1; DN2K4%cM%'
r=j; 7hZCh,O
do{ 3ZGU?Z;R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #UG| \}Lp
SortUtil.swap(data,l,r); D}XyT/8G3
} Kn SXygT
while(l SortUtil.swap(data,l,r); };o6|e:2E
SortUtil.swap(data,l,j); G"T)+!6t
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if((l-i)>THRESHOLD){ ^>gRK*,
stack[++top]=i; 7Vr .&`l
stack[++top]=l-1; &PI}o
} " ^u
if((j-l)>THRESHOLD){ ^W5rL@h_
stack[++top]=l+1; yH#zyO4fD-
stack[++top]=j; i[`nu#n/
} ;{
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} S5*wUd*p#
file://new InsertSort().sort(data); D|/Azy.[
insertSort(data); :{pvA;f
} ck>|p09q'9
/** {";5n7<<)
* @param data mf=, 6fx28
*/ AR\>P
private void insertSort(int[] data) { kbJ/7
int temp; X+)68
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M` Jj!
} bAms-cXm
} gRIRc4p
} !/znovoD
2hdi)C,7Y
} VJJGTkm
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归并排序: 'uBXSP#
D{'x7!5r
package org.rut.util.algorithm.support; ;Xg6'yxJ
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import org.rut.util.algorithm.SortUtil; yS p]+
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/** 1v!Xx+}
* @author treeroot xfCq;?MupW
* @since 2006-2-2 3C 84b/A
* @version 1.0 fp|!LU
*/ zk=5uKcPE
public class MergeSort implements SortUtil.Sort{ :A
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km,}7^?F0r
/* (non-Javadoc) Pwf2dm$,+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7].tt
*/ 2c@4<kyfP
public void sort(int[] data) { lfG]^id'
int[] temp=new int[data.length]; g#ubxC7t<
mergeSort(data,temp,0,data.length-1); N(q%|h<Z/=
} \gaGTc2&
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private void mergeSort(int[] data,int[] temp,int l,int r){ Z7%
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int mid=(l+r)/2; O&!>C7
if(l==r) return ; +Rn]6}5m\
mergeSort(data,temp,l,mid); '
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mergeSort(data,temp,mid+1,r); o7<pI8\
for(int i=l;i<=r;i++){ !:t}8
temp=data; )D_#
} {%X /w'|
int i1=l; {rQ6IV3=
int i2=mid+1; [}q6bXM*
for(int cur=l;cur<=r;cur++){ ax0RtqtR&
if(i1==mid+1) (Em^qN
data[cur]=temp[i2++]; ^M6xRkI
else if(i2>r) >Pj ?IE6
data[cur]=temp[i1++]; ysm)B?+k
else if(temp[i1] data[cur]=temp[i1++]; / =&HunaxI
else O`1_eK~1<
data[cur]=temp[i2++]; ]+\;pb}bq
} 1^^<6e
} d?^bCf+<
2Sbo7e
} aal5d_Y
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改进后的归并排序: v
MTWtc!6
*-"DZ
package org.rut.util.algorithm.support; kSoa'
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import org.rut.util.algorithm.SortUtil; - ` F#MN
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/** TOmq2*,/
* @author treeroot GyQu?`
* @since 2006-2-2 Jk=E"I6
* @version 1.0 'oSs5lW
*/ k)j,~JH
public class ImprovedMergeSort implements SortUtil.Sort { F_0vh;Jo
`%_ yRJd|;
private static final int THRESHOLD = 10; veX#K#
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/* Z9TmX
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* (non-Javadoc) .`qw8e}y#'
* yop,%Fe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ~5LlIpf36|
public void sort(int[] data) { 6$]@}O^V
int[] temp=new int[data.length]; { ]Tb
mergeSort(data,temp,0,data.length-1); _Bh-*e2k
} T=Q"|S]V
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private void mergeSort(int[] data, int[] temp, int l, int r) { j)?[S
int i, j, k; ^W!w~g+
int mid = (l + r) / 2; AmYqrmJ
if (l == r) P X/{
return; vzDoF0Ts*p
if ((mid - l) >= THRESHOLD) :: IAXGH)
mergeSort(data, temp, l, mid); (
-^-
else x?T.ItW:K
insertSort(data, l, mid - l + 1); +pDZ,c,
if ((r - mid) > THRESHOLD) NQb!?w
mergeSort(data, temp, mid + 1, r); e$!01Y$HI
else J3/2>N]/}
insertSort(data, mid + 1, r - mid); vb^/DMhz
tx0`#x
for (i = l; i <= mid; i++) { 7nr+X Os
temp = data; {|dU|h
} *\W
*,D.I
for (j = 1; j <= r - mid; j++) { _19x`J3
temp[r - j + 1] = data[j + mid]; [fVtQ@-S!
} fd Vye|%
int a = temp[l]; S#gIfb<D
int b = temp[r]; Z?@1X`@
for (i = l, j = r, k = l; k <= r; k++) { W>jgsR79M
if (a < b) { B_Qi
data[k] = temp[i++]; 6k14xPj
a = temp; @|A
wT
} else { kFCjko
data[k] = temp[j--]; [Ol}GvzJ7
b = temp[j]; i
qLNX)
} (y^[k {#
} &
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} T2Duz,
V*
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^
/** VE_% /Fs,
* @param data H~fX>6>
* @param l f9`F~6$
* @param i /%O+]#$`0
*/ ;4E(n
private void insertSort(int[] data, int start, int len) { W=Y?_Oz
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ChVur{jR
} BNA` Cc1VV
} M{sn{
} z
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} Glz yFj
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堆排序: -wA^ao
BbCt_z'
package org.rut.util.algorithm.support; <W$Ig@4[.d
]J`yh$a
import org.rut.util.algorithm.SortUtil; j?eWh#[K"
x{=@~c%eh
/** l8O12
* @author treeroot .tFMa:
* @since 2006-2-2 +i %,+3#6
* @version 1.0 \W^+aNbv=8
*/ D7'P^*4_B
public class HeapSort implements SortUtil.Sort{ ;c>Co:W
jg,oGtRz
/* (non-Javadoc) r$=YhI/=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $s[DT!8N
*/ Kz v*`
public void sort(int[] data) { qa|"kRCO
MaxHeap h=new MaxHeap(); x+mfQcSD&
h.init(data); ;JNI$DR
for(int i=0;i h.remove(); d{~5tv- H
System.arraycopy(h.queue,1,data,0,data.length); NrC(.*?m
} C^dnkuA
)JYt zc
private static class MaxHeap{ Y~R['u,
+N~?_5lv\s
void init(int[] data){ =K#12TRf
this.queue=new int[data.length+1]; e3|@H'~k
for(int i=0;i queue[++size]=data; ig] hY/uT
fixUp(size); h` 1{tu
} Wa/&H$d\u@
} Iy2KOv@a5
=Wb!j18]
private int size=0; jl!rCOLt4
!!WSGZUR
private int[] queue; )v4?+$g
wZ^7#yX>
public int get() { }w,^]fC:
return queue[1]; wUd6xR
} !jV}sp<Xp
*2$I,
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public void remove() { |.]:#)^X?
SortUtil.swap(queue,1,size--); x{$~u2|
fixDown(1); 6$d3Ap@Gl
} #U46Au
file://fixdown o0f{ePZ=
private void fixDown(int k) { xB%Felz
int j; GMY"*J<E
while ((j = k << 1) <= size) { K):MT[/"
if (j < size %26amp;%26amp; queue[j] j++; <>jut
if (queue[k]>queue[j]) file://不用交换 ~@3X&E0S
break; Bt8
SortUtil.swap(queue,j,k); -Qt>yzD3
k = j; (TQx3DGq
} HJ&|&tT
} ?q&*|-%)_d
private void fixUp(int k) { {}vB#!
while (k > 1) { 3c#CEuu
int j = k >> 1; -I#]#i@gX
if (queue[j]>queue[k]) pH?tr
break; QQ+? J~
SortUtil.swap(queue,j,k); uC_&?
k = j; :/Zy=F9:
} sCX 8
} RJ#xq#l
*3S./C}
} 6[-N})
rPK)=[MZ
} $"+ahS<?tC
G8m:]!
SortUtil: rtl|zCst
0?D`|x_
package org.rut.util.algorithm; \6UK:'5{
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(
import org.rut.util.algorithm.support.BubbleSort; 4X0k1Fw)Y
import org.rut.util.algorithm.support.HeapSort; @KM !g,f
import org.rut.util.algorithm.support.ImprovedMergeSort; W9!EjXg
import org.rut.util.algorithm.support.ImprovedQuickSort; =:T pH>f*
import org.rut.util.algorithm.support.InsertSort; 6cCC+*V{
import org.rut.util.algorithm.support.MergeSort; ryd*Ha">I
import org.rut.util.algorithm.support.QuickSort; s!\:%N
import org.rut.util.algorithm.support.SelectionSort; 4M)
s
import org.rut.util.algorithm.support.ShellSort; {Z>OAR#
we<m%pf
/** TFX*kk&R
* @author treeroot hOI|#(-
* @since 2006-2-2 -}l iG
* @version 1.0 "=7y6bM
*/ =.@{uu;
public class SortUtil { %R%e0|a
public final static int INSERT = 1; [B}$U|V0
public final static int BUBBLE = 2; :G&tM
public final static int SELECTION = 3; [L.+N@M
public final static int SHELL = 4; Z J:h]
public final static int QUICK = 5; sN6R0YW
public final static int IMPROVED_QUICK = 6; JLS|G?#0
public final static int MERGE = 7; nf,R+oX
public final static int IMPROVED_MERGE = 8; M.|@|If4?
public final static int HEAP = 9; +tbG^w%
!J 3dlUFRO
public static void sort(int[] data) { +{Qk9Z
sort(data, IMPROVED_QUICK); 3h:"-{MW.
} LKCj@N dV
private static String[] name={ c/fU0cA@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Lh0qB)>
}; Zt3"4d4
;pK/t=$
private static Sort[] impl=new Sort[]{ jf_xm=n
new InsertSort(), ![=C`O6K
new BubbleSort(), 89*txYmx
new SelectionSort(), w+QXSa_D
new ShellSort(), SE%B&8ZD
new QuickSort(), *v+xKy#M
new ImprovedQuickSort(), oPSucz&s
new MergeSort(), fq-zgqF<
new ImprovedMergeSort(), JI TQ3UL:W
new HeapSort() ~b.C[s
}; Gqe?CM
PuKT0*_ 7
public static String toString(int algorithm){ zGtWyXP
return name[algorithm-1]; cg16|
} &L&6y()G
F` /mcyf
public static void sort(int[] data, int algorithm) { H/qv%!/o
impl[algorithm-1].sort(data); Q\WH2CK
} XH9Y|FX%#
TqzL] 'NS+
public static interface Sort { JQ-O=8]
public void sort(int[] data); j<H5i}
} >LvQ&fAo
P?- #d\qi
public static void swap(int[] data, int i, int j) { ={HYwP;
int temp = data; nnP]x [
data = data[j]; uBdS}U
data[j] = temp; _!vxX]
} z?ck*9SZX
} rA<>k/a