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。 M%OUkcWCk
插入排序: Y/f8rN
jd.w7.8
package org.rut.util.algorithm.support; X2`n&JE
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import org.rut.util.algorithm.SortUtil; U2
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/** lL,0IfC,
* @author treeroot s8;*Wt
* @since 2006-2-2 k{ulu
* @version 1.0 &kQj)
*/ P"|-)d
public class InsertSort implements SortUtil.Sort{ |Y30B,=M
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/* (non-Javadoc) ~&WBA]w'+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *9US>m Vy
*/ |=[._VH1
public void sort(int[] data) { @xr}(.
int temp; jP.dQj^j&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G[]h1f!
} v)~!HCG
} 2BO"mc<#$
} 7
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} \CBL[X5tr
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冒泡排序: t\O#5mo
SmV}Wf
package org.rut.util.algorithm.support; 'jYKfq~_cJ
k/i&e~! \
import org.rut.util.algorithm.SortUtil; xu@+b~C\
vBV_aB1{
/** Ah;`0Hz;
* @author treeroot X.AE>fx*h
* @since 2006-2-2 hLaQ[9
* @version 1.0 F#z1 sl'
*/ Fnuheb'&m
public class BubbleSort implements SortUtil.Sort{ 0U!_ o2]
TVK*l*
/* (non-Javadoc) >0cg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Aj5 K
*/ ITZ}$=
public void sort(int[] data) { {5(M
int temp; vofBS
for(int i=0;i for(int j=data.length-1;j>i;j--){ :H/Rhx=
if(data[j] SortUtil.swap(data,j,j-1); $PMD $c
} bQHJ}aCi
} sqO$ka{
} ,vB nr_D#
} :M.]- +(
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} GmZ2a-M
JykN EMB#
选择排序: ,qIut|C*
GD4+f|1.*
package org.rut.util.algorithm.support; LAuaowE\v
%Lom#:L'
import org.rut.util.algorithm.SortUtil; (R!`Z%
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/** )!5"\eys
* @author treeroot HG3iK
* @since 2006-2-2 D 1(9/;9
* @version 1.0 HFX,EE
*/ _+<AxE9\
public class SelectionSort implements SortUtil.Sort { ySHio;g9
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/* vAtR\Vh
* (non-Javadoc) Er|j\(jM
* >iI_bcqF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kZ=yb-~
*/ K*5Ij]j&
public void sort(int[] data) { Y r8gKhv W
int temp; S^r[%l<'n
for (int i = 0; i < data.length; i++) { .]/k#Hv
int lowIndex = i; ?}No'E1!I
for (int j = data.length - 1; j > i; j--) { ygxaT"3"=
if (data[j] < data[lowIndex]) { RggO|s+0;
lowIndex = j; |&~);>Cq2
} wvH*<,8Vq
} '&Tz8.jp~
SortUtil.swap(data,i,lowIndex); nM`pnR_
} uk3PoB^>
} q5.5%W
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} F ZN}T{<
5G=fJAG
Shell排序: ZBjb f_M:
O*9d[jw[
package org.rut.util.algorithm.support; IW=%2n(<1
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import org.rut.util.algorithm.SortUtil; ~uuM0POo
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/** A6#v6 iT
* @author treeroot DS7Pioa86
* @since 2006-2-2 J74kK#uF=
* @version 1.0 R".*dC,0'B
*/ [k=LX+w@
public class ShellSort implements SortUtil.Sort{ ,9W!cD+0
.19_EQ>+
/* (non-Javadoc) =!=DISPo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D;Y2yc[v
*/ hmv*IF.
public void sort(int[] data) { D\ P-|}
for(int i=data.length/2;i>2;i/=2){ sM9N Hwg
for(int j=0;j insertSort(data,j,i); sd
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} Q'rX ]kk_
} W1[C/dDc
insertSort(data,0,1); sX(rJLbD
} *!,k`=.([#
@XH@i+{B
/** Gk)6ljL
* @param data l(~NpT{=V
* @param j z[0t%]7l
* @param i ($[@'?Z1
*/ _:G>bU/^
private void insertSort(int[] data, int start, int inc) { Yz>8 Nn '_
int temp; ZU5; w
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8[IR;gZf
} gO bP
} 20 )8e!jP
} "Wy!,RH
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IC:
} 1fV\84m^
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快速排序: {QIdeB[
]GzfU'fOn|
package org.rut.util.algorithm.support; #wF6Wx iG
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import org.rut.util.algorithm.SortUtil; _p%@x:\
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/** ~\Udl
* @author treeroot `%=!_|
* @since 2006-2-2 ];Y tw6A
* @version 1.0 V.w!]{xm
*/ KvlLcE~`o
public class QuickSort implements SortUtil.Sort{ kQ .3J.Q5
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/* (non-Javadoc) +P=I4-?eX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MQVEO5
*/ )"s(;kU!
public void sort(int[] data) { 0;" >.
quickSort(data,0,data.length-1); O_Z
} n ZzGak
private void quickSort(int[] data,int i,int j){ j8?rMD~
int pivotIndex=(i+j)/2; (?z"_\^n/
file://swap yj
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SortUtil.swap(data,pivotIndex,j); O2Tna<cR&
I0OfK3!^
int k=partition(data,i-1,j,data[j]); -aIB_
SortUtil.swap(data,k,j); ,h'omU7
if((k-i)>1) quickSort(data,i,k-1); vVH*\&H\T
if((j-k)>1) quickSort(data,k+1,j); 7@ mP;K0
rv%^2h<&
} ]dnB,
/** I(+%`{Wv
* @param data 86~q pN
* @param i _8OSDW*D5t
* @param j 7niI65
* @return
-to 3I
*/ ^j7]> I
private int partition(int[] data, int l, int r,int pivot) { "=*
do{ U_5\FM
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); E1>zKENN;
SortUtil.swap(data,l,r); j6BFh=?D
} =T|m#*{.L
while(l SortUtil.swap(data,l,r); vtXZ`[D,l)
return l; YJBf~0r
} mA6Nmq%{ F
incUa;
} ASaNac-3
tN&X1
改进后的快速排序: ;h7O_|<%
E^t}p[s
package org.rut.util.algorithm.support; 2$?j'i!
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import org.rut.util.algorithm.SortUtil; +<n8O~h
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/** Dqm;twd>
* @author treeroot 7
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* @since 2006-2-2 =%9j8wHX
* @version 1.0 0/zgjT|fe
*/ m"mU:-jk`
public class ImprovedQuickSort implements SortUtil.Sort { O-]^_LV`
usI$
private static int MAX_STACK_SIZE=4096; ~)iQbLI
private static int THRESHOLD=10; G!w?\-
/* (non-Javadoc) ;Y`k-R:E6A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X8(WsN
*/ "y=AVO
public void sort(int[] data) { _~uYNvmg
int[] stack=new int[MAX_STACK_SIZE]; be~'}`>
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int top=-1; <84d
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int pivot; }G1hB#j
int pivotIndex,l,r; XN~r d,MZ%
5w@Q %'o`I
stack[++top]=0; 1fU~&?&-u
stack[++top]=data.length-1; '0/[%Q
%ysfFE
while(top>0){ A@JZK+WB}
int j=stack[top--]; Iih]q
int i=stack[top--]; ^|=3sJ4[U
3Uni{Z]Q)
pivotIndex=(i+j)/2; fnudu0k
pivot=data[pivotIndex]; |%5nV=&\
%1e{"_$O9
SortUtil.swap(data,pivotIndex,j); :faB7wduW;
-LEpT$v|
file://partition 5gY9D!;:0D
l=i-1; u
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r=j; [7gwJiK
do{ +xRSd *
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gq an]b_
SortUtil.swap(data,l,r); v6+<F;G3y>
} wM&WR2
while(l SortUtil.swap(data,l,r); ?K^~(D8(
SortUtil.swap(data,l,j); 2^=.jML[
nAW`G'V#
if((l-i)>THRESHOLD){ ]LZ,>v
stack[++top]=i; I xE}v%&
stack[++top]=l-1;
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a `<
} $7bux1L
if((j-l)>THRESHOLD){ glP
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stack[++top]=l+1; pt-
1>Ui
stack[++top]=j; +@5*_n\e`
} y7Sj^muBY
m6M:l"u
} Zywx.@!
file://new InsertSort().sort(data); ]eIV'lP,j/
insertSort(data); ~3s\Q%
} =hB0p^a
/** 7NDjXcuq
* @param data RT+_e
*/ ${)s
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private void insertSort(int[] data) { nW`EBs
int temp; TGu]6NzyZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <Z8^.t)|
} ]*JH~.p
} 7.tEi}O&_g
} gVI2{\a
d]w%zo,yr
} :pPn)j$
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归并排序: X3,+aL`
Ld3!2g2y7&
package org.rut.util.algorithm.support; "4e{Cq
OFcqouGE
import org.rut.util.algorithm.SortUtil; 6$6Qk !%
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/** +2S#3m?1
* @author treeroot )90K^$93"
* @since 2006-2-2 R
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* @version 1.0 'or8CGr^p
*/ j9/Ev]im|F
public class MergeSort implements SortUtil.Sort{ DB;Nr3x
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/* (non-Javadoc) %H'*7u2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q XV8][
*/ qb1[-H
public void sort(int[] data) { {kp^@
int[] temp=new int[data.length]; zCdzxb_h"
mergeSort(data,temp,0,data.length-1); >gLLr1L\
} f6zS_y9gn
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5D%gDw+"
int mid=(l+r)/2; A%c)=(,
if(l==r) return ; qmM%MPv
mergeSort(data,temp,l,mid); wx%TQ!
mergeSort(data,temp,mid+1,r); -C<Ni
for(int i=l;i<=r;i++){ bem-T`>'
temp=data; 7JHS8C<]
} Kk_h&by?
int i1=l; }MV=I$S2U
int i2=mid+1; ' 5%`[&
for(int cur=l;cur<=r;cur++){ 8}(ul
if(i1==mid+1) s/J/kKj*s
data[cur]=temp[i2++]; d T*8I0\+
else if(i2>r) h1 (MvEt
data[cur]=temp[i1++]; #-Ad0/
else if(temp[i1] data[cur]=temp[i1++]; 8QNd t
else 9 ?~Y
data[cur]=temp[i2++]; iu(+
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} #J<IHNRt
} nfbq J
/)E'%/"A
} duk:: |{F
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改进后的归并排序: l`A4)8Y@
Lb}
cjI:
package org.rut.util.algorithm.support; 4]/i0\Vbam
p3YF
import org.rut.util.algorithm.SortUtil; =ap6IVR
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/** I{0bsTp;
* @author treeroot 9x40
* @since 2006-2-2 c@1q8,
* @version 1.0 @ dF]X
*/ g2'Q)w
public class ImprovedMergeSort implements SortUtil.Sort { t[-0/-4
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private static final int THRESHOLD = 10; }.R].4gT
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/* WgK |r~
* (non-Javadoc) QP?Deltp
* $=-Q]ld&]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ']]&<B}mz
*/ GXE6=BO
public void sort(int[] data) { @\UoZv(
int[] temp=new int[data.length]; >)IXc<"wq
mergeSort(data,temp,0,data.length-1); f YuM`O
} 4:
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0fd\R_"d.
private void mergeSort(int[] data, int[] temp, int l, int r) { 66+y@l1
int i, j, k; t9Nu4yl
int mid = (l + r) / 2; *(4TasQu
if (l == r) Y/1,%8n
return; o-D,K dY
if ((mid - l) >= THRESHOLD) n_Ka+Y<
mergeSort(data, temp, l, mid); ?98]\pI
else GK/Q]}Q8pZ
insertSort(data, l, mid - l + 1); r4D6I,
if ((r - mid) > THRESHOLD) pM i w9}
mergeSort(data, temp, mid + 1, r); F}lgy;=h
else Twj?SV
insertSort(data, mid + 1, r - mid); M5Twulz/w
'C9H6)Zq)
for (i = l; i <= mid; i++) { oYG].PC
temp = data; ;|Z;YK@20
} Q&9%XF
uM
for (j = 1; j <= r - mid; j++) { >Lo!8Hen
temp[r - j + 1] = data[j + mid]; dWI.t1`i
} $.z~bmH"D
int a = temp[l]; +H K)A%QI
int b = temp[r]; yeCR{{B/'
for (i = l, j = r, k = l; k <= r; k++) { <9s=K\-
if (a < b) { f2#9E+IQ
data[k] = temp[i++]; R "&(Ae?LR
a = temp; /Lc=
K<
} else { O&:0mpRZ
data[k] = temp[j--]; VhAZncw
b = temp[j]; P~+?:buqc
} _uO#0
)l
} /I'n]
} ; YaR|)B
}bv0~}G4
/** 7\
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* @param data 1x0 7ua@(v
* @param l .=>T yq
* @param i P'Fy,fNg
*/ hao0_9q+
private void insertSort(int[] data, int start, int len) { 8O]U&A@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4nhe *ip
} #&1Y!kbdd
} LaE;{ jY
} vl@t4\@3
} 1 ]@}+H
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堆排序: p0.?R
n(Up?_
package org.rut.util.algorithm.support; $l&&y?()
~?}/L'q!b
import org.rut.util.algorithm.SortUtil; xX'Uq_Jv
ndm19M8Y|
/** I_yIVw;
* @author treeroot r<oI4px
* @since 2006-2-2 L-d8bA
* @version 1.0 c=2e?
*/ *x|
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public class HeapSort implements SortUtil.Sort{ L!L/QG|wdf
DJE/u qE
/* (non-Javadoc) a{h(BI^~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #^Dc:1,
*/ SPV'0* Z
public void sort(int[] data) { j8os6I
MaxHeap h=new MaxHeap(); Ar sMqb
h.init(data); 34C
^vBp
for(int i=0;i h.remove(); LIH>IpamN
System.arraycopy(h.queue,1,data,0,data.length); J1<fE(X
} %6<Pt
O#7ldF(
private static class MaxHeap{ 2t { Cpw
s8|#sHT
void init(int[] data){ A*pihBo7
this.queue=new int[data.length+1]; 2H<?
for(int i=0;i queue[++size]=data; Xh]\q)
fixUp(size); b,a\`%m}
} ^+[o+
} 2vnzB8"k
FGx_qBG4|
private int size=0; LM'` U-/e$
+29;T0>a
private int[] queue; T , =ga
P&aH6*p1
public int get() { >*} qGk
return queue[1]; 3i(k6)H$4
} L1Q QU
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public void remove() { @`.u"@
SortUtil.swap(queue,1,size--); 9L#B"lh
fixDown(1); [Pp#l*
} !E_uQ?/w]Z
file://fixdown z K8#gif@
private void fixDown(int k) { ~DZ;l/&Mz7
int j; UKK}$B
while ((j = k << 1) <= size) { M{kPEl&Z
if (j < size %26amp;%26amp; queue[j] j++; 6sy%KO*A
if (queue[k]>queue[j]) file://不用交换 F'CUkVC0~P
break; t=\V&,
SortUtil.swap(queue,j,k); wHZ!t,g
k = j; R~*Y@_oD
} r-YQsu&
} Vd<=
y
private void fixUp(int k) { xN"KSQpu
while (k > 1) { \Di~DN1
int j = k >> 1; pjj
5
if (queue[j]>queue[k]) G^mk<pH
break; 'v|2}T*
SortUtil.swap(queue,j,k); $fKwJFr
k = j; Mty]LMK
} GvzPT2E!
} 8)POEY4
3n:<oOV
} cHsJQU*K6
h/TPd]
} Bh' vr3|
f!$J_dz
SortUtil: >qF KXzI
sf*SxdoZU
package org.rut.util.algorithm; [!R%yD;
wCt+{Y3T
import org.rut.util.algorithm.support.BubbleSort; 4\ OELU
import org.rut.util.algorithm.support.HeapSort; Ok`U*j
import org.rut.util.algorithm.support.ImprovedMergeSort; )vU{JY;
import org.rut.util.algorithm.support.ImprovedQuickSort; "}HQ)54&
import org.rut.util.algorithm.support.InsertSort; _Mt:^H}Sy
import org.rut.util.algorithm.support.MergeSort; )ql?}
import org.rut.util.algorithm.support.QuickSort; #6H<JB
import org.rut.util.algorithm.support.SelectionSort; <Ab:yD`K!
import org.rut.util.algorithm.support.ShellSort; (Z"Xp{u
~$\j$/A8/
/** 1UM]$$:i
* @author treeroot
.V.N^8(:a
* @since 2006-2-2 dY-a,ch"8p
* @version 1.0 {hg$?4IyQ
*/ c&Zm>Qo[
public class SortUtil { g?$9~/h :;
public final static int INSERT = 1; }"&(sYQ*`
public final static int BUBBLE = 2; Ro1' L1:
public final static int SELECTION = 3; !F<?h e<U
public final static int SHELL = 4; Awh"SUOh0
public final static int QUICK = 5; ai`:HhE
public final static int IMPROVED_QUICK = 6; &vF "I'V
public final static int MERGE = 7; )(L&+DDy
public final static int IMPROVED_MERGE = 8;
<@vE3v;
public final static int HEAP = 9; 8S02
3
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public static void sort(int[] data) { E7h}0DX
sort(data, IMPROVED_QUICK); wKeqR$
} &"kx(B
private static String[] name={ 0 j.Sb2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JZXc1R| 9
}; Ksp;bfe
"
}ZD)7K
private static Sort[] impl=new Sort[]{ !>:tF,fcB
new InsertSort(), =5|5j!i=q
new BubbleSort(), *(scSC>
new SelectionSort(), ]Cz16e&=2
new ShellSort(), aBI]' D;
new QuickSort(), >Qx#2x+
new ImprovedQuickSort(), 2>!ykUw^O
new MergeSort(), XGoy#h
new ImprovedMergeSort(), zc1Zuco|
R
new HeapSort() 6+u'Tcb
}; d$TW](Bby
~JNuy"8
public static String toString(int algorithm){ `?@7 KEl>
return name[algorithm-1]; h^0mjdSp,
} 4AM*KI
!qpu /
public static void sort(int[] data, int algorithm) { P8VU&b\
impl[algorithm-1].sort(data); `l+SJLyJ%
} Zb}PP;O
g7P1]CZ}
public static interface Sort { |:#mw1
public void sort(int[] data); E nvs[YZe
} fA8+SaXW%
Fq9[:
public static void swap(int[] data, int i, int j) { 9vbh5xX
int temp = data; 7xc<vl#:q7
data = data[j]; u
.2sB6}
data[j] = temp; W$JA4O>b
} 'MUrszOO.e
} qc6IH9i`