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[JAVA]用Java实现的各种排序

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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。 | VDV<g5h  
插入排序: +x}<IS8  
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package org.rut.util.algorithm.support; Ilm^G}GB  
L9#g)tf 8T  
import org.rut.util.algorithm.SortUtil; ?!/kZM_ts  
/** 1[-tD 0{H  
* @author treeroot ~4cC/"q$X  
* @since 2006-2-2 S:ztXhif>  
* @version 1.0 +X]vl=0  
*/ a7%]Y}$  
public class InsertSort implements SortUtil.Sort{ C$)onk  
 %D "I  
/* (non-Javadoc) Dv`c<+q(#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D^;Uq8NDKq  
*/ "kqPmeI  
public void sort(int[] data) { <p"iY}x[H  
int temp; 9=2$8JN=(l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %H"47ZFxAs  
} Jxm.cC5z.  
} @U}1EC{A  
} Pk)1WK7E  
~61v5@  
} [j'X;tVX{  
jEJT-*I1+  
冒泡排序: xKp4*[}m  
nzeX[*  
package org.rut.util.algorithm.support; jRV/A!4  
=odFmF  
import org.rut.util.algorithm.SortUtil; }RqK84K  
$iz|\m  
/** H$4:lH&(  
* @author treeroot /&94 eC  
* @since 2006-2-2 i K? w6  
* @version 1.0 wj0\$NQ=x  
*/ pyvSwD5t  
public class BubbleSort implements SortUtil.Sort{ uGlUc<B\*  
y'*K|a TG  
/* (non-Javadoc) U4B( #2'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^y%T~dLkp'  
*/ [cp+i^f  
public void sort(int[] data) { u.Dz~$T  
int temp; Q'0d~6n&{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vRO _Q?  
if(data[j] SortUtil.swap(data,j,j-1); XOS[No~  
} d/DB nZN  
} K(Bf2Mfq  
} 8-77d^cprR  
} n6a`;0f[R  
W6/yn  
} y h9*z3  
@I!0-OjL  
选择排序: 3/n5#&c\4  
N<injx  
package org.rut.util.algorithm.support; )P|),S,;Z  
oM`0y@QCf  
import org.rut.util.algorithm.SortUtil; ZzT9j~  
`+Q%oj#FF  
/** N//K Ph  
* @author treeroot ?<'}r7D   
* @since 2006-2-2 r<^HmpUJ  
* @version 1.0 ;;N9>M?b  
*/ 6jLCU%^  
public class SelectionSort implements SortUtil.Sort { kpN)zxfk  
;MdlwQ$`  
/* hx]?&zT@  
* (non-Javadoc) 0Z{ZO*rK  
* f=K]XTw~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5"O.,H}  
*/ 81 sG  
public void sort(int[] data) { YteO 6A;  
int temp; Z}Ft:7   
for (int i = 0; i < data.length; i++) { @r/n F5  
int lowIndex = i; ]-/VHh  
for (int j = data.length - 1; j > i; j--) { ckE-",G  
if (data[j] < data[lowIndex]) { L0WN\|D  
lowIndex = j; rCdu0 gYT  
} 2!=f hN  
} E#N|w q  
SortUtil.swap(data,i,lowIndex); ;@Y;g(bw:  
} %/#NK1&M  
} l)l^[2  
q9r[$%G  
} q6V>zi  
mSh[}%swj  
Shell排序: Fyatd  
H ]Z$OpI  
package org.rut.util.algorithm.support; fHd#u%63K  
mSl.mi(JiZ  
import org.rut.util.algorithm.SortUtil; [j/9neaye  
hy"\RW  
/** Od,qbU4O  
* @author treeroot @O^6&\s>  
* @since 2006-2-2 >V8-i`  
* @version 1.0 &powy7rR  
*/ VY=jc~c]v  
public class ShellSort implements SortUtil.Sort{ ud@%5d  
5IjGm  
/* (non-Javadoc) 3eAX.z`D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^'{Fh"5  
*/ ]:k/Y$O2  
public void sort(int[] data) { ^KT Y?  
for(int i=data.length/2;i>2;i/=2){ O:{~urV  
for(int j=0;j insertSort(data,j,i); !Pfr,a  
} L2i_X@/  
} 4*cEag   
insertSort(data,0,1); =|y9UlsD  
} `% "\@<  
j@3Q;F0ba  
/** ShP^A"Do  
* @param data DgQp HF  
* @param j ~/iKh1 1  
* @param i H;k~oIs k  
*/ >rmqBDKaQ  
private void insertSort(int[] data, int start, int inc) { q01wbO3-"  
int temp; ,K"U> &  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ! Y~FLA_  
} nRZ]z( b  
} ,77d(bR<  
} RmeD$>7  
o&)8o5  
} &>W$6>@  
sW'AjI  
快速排序: Y0dEH^I  
`w7v*h|P  
package org.rut.util.algorithm.support; V]e8a"/[{  
Hc$O{]sq  
import org.rut.util.algorithm.SortUtil; vDhh>x(  
PQSP&  
/** hPkWCoQpq  
* @author treeroot s %``H`  
* @since 2006-2-2 &P}_bx  
* @version 1.0 H0gbSd+  
*/ li'YDtMKCY  
public class QuickSort implements SortUtil.Sort{ J~ zUp(>K  
;oKZ!ND  
/* (non-Javadoc) /}fHt^2H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { VfXsI  
*/ H.|#c^I  
public void sort(int[] data) { RSyUaA  
quickSort(data,0,data.length-1); `O!X((  
} }mYx_=+VX  
private void quickSort(int[] data,int i,int j){  Rn(ec  
int pivotIndex=(i+j)/2;  v zs)[AD  
file://swap z2_*%S@  
SortUtil.swap(data,pivotIndex,j); BxWPC#5  
pnowy;  
int k=partition(data,i-1,j,data[j]); c"n\cNP<  
SortUtil.swap(data,k,j); Fa Qe_;  
if((k-i)>1) quickSort(data,i,k-1); r4XK{KHn  
if((j-k)>1) quickSort(data,k+1,j); ll<Xz((o  
0y" $MC v  
} wOEj)fp .  
/** :bu/^mW[  
* @param data fF$<7O)+]  
* @param i . y-D16V  
* @param j Pg0x/X{t  
* @return tqvN0vY5  
*/ &0OG*}gi  
private int partition(int[] data, int l, int r,int pivot) { Pw7]r<Q  
do{ 4$iz4U:P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ['X]R:3h  
SortUtil.swap(data,l,r); <EB+1GFuI  
} -aPg#ub  
while(l SortUtil.swap(data,l,r); ( iBl   
return l; 3LJ+v5T~  
} ?cBwPetp  
3nIU1e  
} eueH)Xkf  
\ =?a/  
改进后的快速排序: !N\@'F!  
l6T-}h:=  
package org.rut.util.algorithm.support; dUeN*Nq&(,  
E"\<s3  
import org.rut.util.algorithm.SortUtil; |"X*@s\'  
JIEK*ui  
/**  N_kMK  
* @author treeroot UN;H+gNnN  
* @since 2006-2-2 ?>D+ge  
* @version 1.0 Ga-k  
*/ _JzEGpeG  
public class ImprovedQuickSort implements SortUtil.Sort { jH5 k  
?K$(817  
private static int MAX_STACK_SIZE=4096; #l\=}#\1Wb  
private static int THRESHOLD=10; RVnjNy;O`  
/* (non-Javadoc) 1y4|{7bb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )0.kv2o.  
*/ b$d;Qx  
public void sort(int[] data) { 5Md=-,'J!  
int[] stack=new int[MAX_STACK_SIZE]; [i21FX  
GfxZ'VIn  
int top=-1; |B?m,U$A!  
int pivot; Z, zWuE3  
int pivotIndex,l,r; Q 04al=  
*.ll<p+(-  
stack[++top]=0; ,8S/t+H  
stack[++top]=data.length-1; d\&U*=  
:;RMo2Tl  
while(top>0){ SB;&GHq"n  
int j=stack[top--]; YiXk5B0Uh  
int i=stack[top--]; Avge eJi  
0#7>o^2  
pivotIndex=(i+j)/2; BA@lk+aW  
pivot=data[pivotIndex]; .wEd"A&j  
uanhr)Ys  
SortUtil.swap(data,pivotIndex,j); !hA-_  
& TCkpS  
file://partition 1jmjg~W  
l=i-1; -V*R\,>  
r=j; x 77*c._3v  
do{ >2y':fO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fbyd"(V 8r  
SortUtil.swap(data,l,r); s$zLiQF;  
} 8 `v-<J  
while(l SortUtil.swap(data,l,r); E+j/ Cu  
SortUtil.swap(data,l,j); Q4#.X=.d  
l] K3Y\#bP  
if((l-i)>THRESHOLD){ =Pyj%4Rs  
stack[++top]=i;  g T6z9  
stack[++top]=l-1; @f_Lp%K  
} 6gU96Z  
if((j-l)>THRESHOLD){ *l(7D(#  
stack[++top]=l+1; : p1u(hflS  
stack[++top]=j; %HhBt5w  
} D5gFXEeh  
/m!BY}4W  
} T )&A2q  
file://new InsertSort().sort(data); ^7`BP%6  
insertSort(data); xBj 9y u  
} N_LM/of|D  
/** DcS+_>a\{l  
* @param data {Ea b j  
*/ x f'V{9*  
private void insertSort(int[] data) { "-E\[@/  
int temp; &.F4 b~A7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `{8K.(])s!  
} 1;* cq  
} <q)#  
} K$z2YJ%  
 }t!Gey  
} HRpte=`q  
$o!zUH~'v  
归并排序: tb 5`cube  
k x8G  
package org.rut.util.algorithm.support; `](e:be}  
NYhB'C2  
import org.rut.util.algorithm.SortUtil; 3h]g}&k  
i}(LqcYU  
/** Do9x XK  
* @author treeroot M.JA.I@XC  
* @since 2006-2-2 `T1  
* @version 1.0 }czrj%6  
*/ l&[O  
public class MergeSort implements SortUtil.Sort{  X hR4ru`  
q#~ (/  
/* (non-Javadoc) xnjf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]|#+zx|/D  
*/ "BAK !N$9  
public void sort(int[] data) { xKbXt;l2  
int[] temp=new int[data.length]; SA:Zc^aV  
mergeSort(data,temp,0,data.length-1); D=TvYe  
} O/^ %2mG  
t <~h'U  
private void mergeSort(int[] data,int[] temp,int l,int r){ >:SHV W  
int mid=(l+r)/2; PhLn8jNti  
if(l==r) return ; ]iVcog"T  
mergeSort(data,temp,l,mid); 2y75  
mergeSort(data,temp,mid+1,r); x exaQuK  
for(int i=l;i<=r;i++){ )',R[|<  
temp=data; {.`vs;U  
} @?ebuj5{e  
int i1=l; P|`8}|}a  
int i2=mid+1; zg>zUe bA  
for(int cur=l;cur<=r;cur++){ "2!&5s,1p  
if(i1==mid+1) C-xr"]#]  
data[cur]=temp[i2++]; @b\$yB@z  
else if(i2>r) 1> ?M>vK  
data[cur]=temp[i1++]; n>z9K')  
else if(temp[i1] data[cur]=temp[i1++]; IZf{nQ[0  
else >[f?vrz  
data[cur]=temp[i2++]; 4>YR{  
} cs48*+m  
} _r#Z}HK  
qyb?49I  
} H;mSkRD3N  
VD AaYDi  
改进后的归并排序: "37lx;CH  
_IMW {  
package org.rut.util.algorithm.support; YO`]UQ|dc  
Brw@g8w-X  
import org.rut.util.algorithm.SortUtil; t}a: p6D]  
kb%;=t2  
/** A.F%Ycq  
* @author treeroot a9e>iU  
* @since 2006-2-2 {'flJ5]  
* @version 1.0 je\Ph5"  
*/ 85= )lu  
public class ImprovedMergeSort implements SortUtil.Sort { rCEyQ)R_}  
 y`iBFC;_  
private static final int THRESHOLD = 10; F-QzrquS  
Xxj- 6i  
/* 8bGd} (  
* (non-Javadoc) Mc lkEfn  
* W_293["lS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S)(.,x  
*/ + /G2fhE  
public void sort(int[] data) { {L971W_L  
int[] temp=new int[data.length]; 2YL?,uLS  
mergeSort(data,temp,0,data.length-1); Z9E\,Ly  
} `%bypHeSp  
J6"9v;V  
private void mergeSort(int[] data, int[] temp, int l, int r) { -]Bq|qTH[(  
int i, j, k; >tS'Q`R  
int mid = (l + r) / 2; d7^}tM  
if (l == r) b#c:u2  
return; &N9 a<w8+  
if ((mid - l) >= THRESHOLD) zC:ASt  
mergeSort(data, temp, l, mid); b)#hSjWO#  
else -:^U_FL8un  
insertSort(data, l, mid - l + 1); NSMyliM1Y  
if ((r - mid) > THRESHOLD) BU)U/A8iS  
mergeSort(data, temp, mid + 1, r); wVXS%4|v  
else $QF{iV@6d4  
insertSort(data, mid + 1, r - mid); f^ZRT@`O  
>~rTqtKd  
for (i = l; i <= mid; i++) { O^PKn_OJ  
temp = data; G&SB-  
} x^qVw5{n  
for (j = 1; j <= r - mid; j++) { ;<Sd~M4f  
temp[r - j + 1] = data[j + mid]; )6MfRw  
} ?PxP% $hS  
int a = temp[l]; ~hH REI&  
int b = temp[r]; w_c"@CjkE  
for (i = l, j = r, k = l; k <= r; k++) { X56q-|  
if (a < b) { T.F!+  
data[k] = temp[i++]; hW' )Sp  
a = temp; P;y45b  
} else { RU{twL.B  
data[k] = temp[j--]; ? V1*cVD6i  
b = temp[j]; yu {d! {6  
} @ y.?:7I  
} >{ ]%F*p4  
} G5_=H,Vmd  
g'f@H-KCD  
/** tIi&;tw]  
* @param data dbLZc$vPj  
* @param l OO\+J  
* @param i YDsb3X<0'  
*/ 2szPAuN+  
private void insertSort(int[] data, int start, int len) { lBE= (A`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  7Die FZ?  
} NX.6px17  
} GKqm&/M*=  
} ;O5zUl-`  
} %Xd[(Q)  
5ta `%R_  
堆排序: 4B;=kL_f  
@IKYh{j4  
package org.rut.util.algorithm.support; "^[ 'y7i  
bP#:Oi0v`  
import org.rut.util.algorithm.SortUtil; NYUL:Tp  
v"$L702d$\  
/** tT8%yG}  
* @author treeroot 2|y"!JqE1  
* @since 2006-2-2 |i*37r6]=  
* @version 1.0 u#fM_>ML  
*/ /62!cp/F/D  
public class HeapSort implements SortUtil.Sort{ P5V}#;v  
6wRd<]C  
/* (non-Javadoc) ,t744k')  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UgRiIQMq.  
*/ ztY}5A2`  
public void sort(int[] data) { VCfl`Aq'l  
MaxHeap h=new MaxHeap(); &B;~  
h.init(data); p>N(Typ0b  
for(int i=0;i h.remove(); *R,5h2;  
System.arraycopy(h.queue,1,data,0,data.length); EWt[z.`T1  
} //MUeTxR  
**0~K";\  
private static class MaxHeap{ sdrfsrNvB-  
]cvwIc">  
void init(int[] data){ 0auYG><=  
this.queue=new int[data.length+1]; FUzzB94a  
for(int i=0;i queue[++size]=data; 1\m[$Gs:  
fixUp(size); P;no?  
} :kV#y  
} }#+^{P3;  
}&D WaO]J7  
private int size=0; {WS;dX4  
uMv,zO5  
private int[] queue; 8d{0rqwNE  
L{\8!51L  
public int get() { 3&4(ZH=  
return queue[1]; }6~hEc*/"  
} M0"_^?  
y<3-?}.aZ  
public void remove() { #z%fx   
SortUtil.swap(queue,1,size--); kH1~k,|\&K  
fixDown(1); 'oVx#w^mf  
} n&/ `  
file://fixdown DfD&)tsMQ  
private void fixDown(int k) { N>1em!AS  
int j; Oo~; L,  
while ((j = k << 1) <= size) { 5;WH:XM  
if (j < size %26amp;%26amp; queue[j] j++; ;;t yoh~t  
if (queue[k]>queue[j]) file://不用交换 (,2S XV  
break; h" W,WxL8  
SortUtil.swap(queue,j,k); SulY1,  
k = j; gVuFHHeUz  
} V Q@   
} e%M;?0j  
private void fixUp(int k) { Y|qTyE%  
while (k > 1) { {S \{Ii6  
int j = k >> 1; ?$pCsBDo  
if (queue[j]>queue[k]) y Pp9\[+^j  
break; cVpp-Z|s8  
SortUtil.swap(queue,j,k); IPpN@  
k = j; y.k~Y0  
} 8Fh)eha9f  
} >'$Mp<  
Y@iS_lR  
} N~gzDQ3  
ej d(R+  
} /nsX]V6i  
M _f:A  
SortUtil: 6@!`]tSCK  
T>Z<]s  
package org.rut.util.algorithm; :-Z2:/P  
qR{=pR  
import org.rut.util.algorithm.support.BubbleSort; cjY-y-vO  
import org.rut.util.algorithm.support.HeapSort; 6MW{,N  
import org.rut.util.algorithm.support.ImprovedMergeSort; P+sW[:  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3?yg\  
import org.rut.util.algorithm.support.InsertSort; (C L%>5V  
import org.rut.util.algorithm.support.MergeSort; l'qg8  
import org.rut.util.algorithm.support.QuickSort; D_7,m%Z:  
import org.rut.util.algorithm.support.SelectionSort; T-L||yE,h  
import org.rut.util.algorithm.support.ShellSort; vr l-$ii  
X?',n 1  
/** }.(B}/$u  
* @author treeroot 00y!K m_D  
* @since 2006-2-2 uzPV To|=  
* @version 1.0 q`-N7 ,$T  
*/ eByz-,{P  
public class SortUtil { e *C(q~PQ  
public final static int INSERT = 1; _VN?#J)o  
public final static int BUBBLE = 2; 3"i-o$P  
public final static int SELECTION = 3; ]6` %  
public final static int SHELL = 4; ObS3 M  
public final static int QUICK = 5; ]m<$}  
public final static int IMPROVED_QUICK = 6; I236 RIq  
public final static int MERGE = 7;  (ZizuHC  
public final static int IMPROVED_MERGE = 8; F>l] 9!P|m  
public final static int HEAP = 9; RqrdAkg  
P@B]  
public static void sort(int[] data) { x9g#<2w8  
sort(data, IMPROVED_QUICK); p6@)-2^  
} n\DV3rXI9  
private static String[] name={ bE..P&"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4$<JHo @.  
}; cq]6XK-W  
[q -h|m  
private static Sort[] impl=new Sort[]{ eym4=k ~  
new InsertSort(), " 8MF_Gu):  
new BubbleSort(), 7$=In K  
new SelectionSort(), KpGhQdR#  
new ShellSort(), niyV8v  
new QuickSort(), Hn"RH1Zy  
new ImprovedQuickSort(), x;d6vBTUb  
new MergeSort(), 6{b >p+U  
new ImprovedMergeSort(), IJ"q~r$  
new HeapSort() pnOAs&QAm  
}; T5h H  
4[e X e$  
public static String toString(int algorithm){ cwg"c4V  
return name[algorithm-1]; z:*|a+cy  
} D,feF9  
,qxu|9L  
public static void sort(int[] data, int algorithm) { bn5 Su=]  
impl[algorithm-1].sort(data); 25?6gu*Z  
} HZge!Yp<  
}}~|!8  
public static interface Sort { C'x&Py/#  
public void sort(int[] data); /8S>;5hvK@  
} T~e.PP  
|{ip T SH  
public static void swap(int[] data, int i, int j) { L8B! u9%  
int temp = data; K|, .C[  
data = data[j]; 1+s;FJ2}  
data[j] = temp; g- gV2$I  
} "to;\9lP  
} *2l7f`K  
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