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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。 s=nds"J  
插入排序: us cR/d  
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package org.rut.util.algorithm.support; ~9c9@!RA2  
bk?\=4B:E  
import org.rut.util.algorithm.SortUtil; y,x~S\>+  
/** Gt%kok  
* @author treeroot O>Sbb2q?"  
* @since 2006-2-2 QCo^#-   
* @version 1.0 =,'Z6?%p  
*/ gMvvDP!Wp  
public class InsertSort implements SortUtil.Sort{ pE< ' '`  
M,@SUu v"  
/* (non-Javadoc) O92Yd$S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QEgv,J{  
*/ 1=X=jPwO C  
public void sort(int[] data) { (NQ[AypMI  
int temp; mOB\ `&h5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lv4=-mWv&0  
} <(MFEIt  
} &zp5do;m  
} d5\1-d_uz  
op*+fJHD  
} 'YG`/@n;  
^ \?9W  
冒泡排序: -^5R51  
E)P1`X  
package org.rut.util.algorithm.support; uM}O8N  
YZ>cE#  
import org.rut.util.algorithm.SortUtil; g)9/z  
O,{ (  
/** #J!? :(m:  
* @author treeroot O>GP>U?]  
* @since 2006-2-2 ;Ki1nq5c#s  
* @version 1.0 w}0Qy  
*/ 54{"ni 2a  
public class BubbleSort implements SortUtil.Sort{ Cg Sdyg@  
$VA4% 9  
/* (non-Javadoc) xD=D *W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rYJ ))@  
*/ JdHc'WtS!|  
public void sort(int[] data) { ,gvX ~k  
int temp; ie!4z34  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `9+EhP$RS  
if(data[j] SortUtil.swap(data,j,j-1); 3EvA 5K.  
} s]iOC6v  
} [UH5D~Yx  
} ^ztf:'l@C  
} CA4-&O"  
+ LwoBn>6  
}  kTz  
iV&#5I  
选择排序: /v{[Z&z  
)rj mJ  
package org.rut.util.algorithm.support; ?N ga  
| #Pc e  
import org.rut.util.algorithm.SortUtil; qM0MSwvC=  
76b7-Nj"  
/** co3 ,8\N0  
* @author treeroot )9r%% #  
* @since 2006-2-2 $<4Ar*i  
* @version 1.0 wM)w[  
*/ I[UA' ~f  
public class SelectionSort implements SortUtil.Sort { |pqpF?h5|  
k)py\  
/* `<zb  
* (non-Javadoc) 2M?lgh4"  
* .;b> T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uKy*N*}  
*/ 6iG<"{/U5  
public void sort(int[] data) { O+?zn:  
int temp; %7#Zb'  
for (int i = 0; i < data.length; i++) { {*<C!Qg  
int lowIndex = i; ]eW|}V7A:  
for (int j = data.length - 1; j > i; j--) { /wE_eK.  
if (data[j] < data[lowIndex]) { Lf#G?]@  
lowIndex = j; GZEonCk[&  
} R3n&o%$*  
} Y:,R7EO{!  
SortUtil.swap(data,i,lowIndex); }i&dZTBGW  
} dSVu_*y  
} k~f+LO  
+{%(_ <  
} \bic.0-  
p*,P%tX  
Shell排序: :XSc#H4  
RRqMwy>%  
package org.rut.util.algorithm.support; ib \[ ~rg  
Wk?|BR]O  
import org.rut.util.algorithm.SortUtil; Vb^s 'k  
eC?/l*gF 3  
/** rR@n> Xx  
* @author treeroot J&:W4\ m  
* @since 2006-2-2 $ bNe0  
* @version 1.0 Hi_Al,j:  
*/ RYl3txw  
public class ShellSort implements SortUtil.Sort{ _[i=TqVmf  
NP`s[  
/* (non-Javadoc) 15 o.j!S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _c8.muQ<  
*/ 82za4u$q#  
public void sort(int[] data) { 3:joSQa  
for(int i=data.length/2;i>2;i/=2){ M/a/H=J  
for(int j=0;j insertSort(data,j,i); C;q}3c*L  
} _(`X .D  
} :{:?D\%6  
insertSort(data,0,1); d._gH#&v  
} }c4E 2c  
:.o=F`W  
/** =jIT"rk  
* @param data V`,[=u?c  
* @param j n>:c}QAJH  
* @param i 8EG8!,\I  
*/ Cw[Od"B\?U  
private void insertSort(int[] data, int start, int inc) { 9/daRq$  
int temp; hcd>A vC8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (1SO;8k\  
} _8li4;F  
} Mc7<[a  
} |M<.O~|D6}  
h:jI  
} ZqbM%(=z(`  
M.:@<S  
快速排序: `s83r hs`!  
d=(Yl r  
package org.rut.util.algorithm.support; $^=jPk]+  
'%-xe3  
import org.rut.util.algorithm.SortUtil; ;Nf hKu%K  
mXU?+G0  
/** aI{@]hCo  
* @author treeroot ~|Ih JzDt  
* @since 2006-2-2 "aWX:WL&}s  
* @version 1.0 ONN{4&7@<  
*/ ys[i`~$  
public class QuickSort implements SortUtil.Sort{ 7 Mki?EG  
O&gwr  
/* (non-Javadoc) OpbT63@L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  TXD^Do5^  
*/  %*5g<5  
public void sort(int[] data) { _"!{7e`Z  
quickSort(data,0,data.length-1); |t65# 1  
} H]i+o6  
private void quickSort(int[] data,int i,int j){ Iz?W tm }  
int pivotIndex=(i+j)/2; ^dUfTG9{  
file://swap t66f 7AR  
SortUtil.swap(data,pivotIndex,j); F*4Qa  
F0BOhlK  
int k=partition(data,i-1,j,data[j]); |T$a+lHMD  
SortUtil.swap(data,k,j); eW"x%|/Q7  
if((k-i)>1) quickSort(data,i,k-1); GATP  
if((j-k)>1) quickSort(data,k+1,j); *M5$ h*;v  
2>MP:yY;K  
} Eo { 1y  
/** XuFm4DEJ  
* @param data }U?gKlLg  
* @param i j |'# 5H`  
* @param j @%G'U&R{  
* @return cB|Cy{%  
*/ hDB`t $  
private int partition(int[] data, int l, int r,int pivot) { |,a%z-l  
do{ LTYu xZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ilIV}8  
SortUtil.swap(data,l,r); F`;TU"pDf  
} g~Nij~/  
while(l SortUtil.swap(data,l,r); _yxe2[TD  
return l; f`u5\!}=!  
} nXM9Px!  
b#Fk>j  
} M=\d_O#;Z  
PK-}Ldj  
改进后的快速排序: )-Mn"1ia  
G {pP}  
package org.rut.util.algorithm.support; kol,Qs  
|%:q hs,  
import org.rut.util.algorithm.SortUtil; )~?S0]j}  
[al(>Wr9  
/** 0{"dI;b%  
* @author treeroot } Jdh^t.  
* @since 2006-2-2 k5fH ;  
* @version 1.0 f0cYvL ]  
*/ }P&1s,S8J#  
public class ImprovedQuickSort implements SortUtil.Sort { ]s*[Lib  
Bt*&L[&57  
private static int MAX_STACK_SIZE=4096; %/tGkS6  
private static int THRESHOLD=10; w>z8c3Dq}  
/* (non-Javadoc) =0PNHO\gl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^B<PD]  
*/ }j5R@I6P  
public void sort(int[] data) { /\,_P  
int[] stack=new int[MAX_STACK_SIZE]; |i} +t  
 \]f5  
int top=-1; q#Yg0w~  
int pivot; >%n8W>^^4  
int pivotIndex,l,r; 33{;[/4  
qXP1Q3  
stack[++top]=0; HC9vc,Fp  
stack[++top]=data.length-1; M]6w^\4j9  
w L/p.@  
while(top>0){ ,`%k'ecN  
int j=stack[top--]; <i{m.p R>  
int i=stack[top--]; 8`AcS|k  
xP{HjONu  
pivotIndex=(i+j)/2; {*M>X}voS  
pivot=data[pivotIndex]; `eMrP`  
dt-Qu},8-  
SortUtil.swap(data,pivotIndex,j); 0^<Skm27"  
4hsPbUx9  
file://partition /@9-!cL  
l=i-1; `zElBD  
r=j; Pg*?[^*  
do{ OQytgXED  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Edf=?K+\!i  
SortUtil.swap(data,l,r); fB;&n  
} wc6 E- rB  
while(l SortUtil.swap(data,l,r); IKMs Y5i  
SortUtil.swap(data,l,j); 36kc4=  
R\9>2*w  
if((l-i)>THRESHOLD){ dT0^-XSY  
stack[++top]=i; {~j /XB  
stack[++top]=l-1; aWHd}%  
} (B>yaM#5  
if((j-l)>THRESHOLD){ nR,Qm=;  
stack[++top]=l+1; @7Q*h   
stack[++top]=j; RMS.1:O  
} 3JlC/v#0  
4f{[*6 GX  
} S\! a"0$  
file://new InsertSort().sort(data); dxzvPgi?  
insertSort(data); S F&M (=w<  
} p<of<YU)  
/** rt5oRf:wY  
* @param data SE-!|WR  
*/ ^w;o\G  
private void insertSort(int[] data) { 5}-)vsa`  
int temp; 4B:\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &57qjA ,8<  
} ]6a/0rg:t  
} Ek"YM[  
} 8_^'(]  
-vv   
} $:%*gY4~76  
5z9r S<  
归并排序: im_w+h%^  
^Ei*M0fF  
package org.rut.util.algorithm.support; U=haX x4N  
92P ,:2`a  
import org.rut.util.algorithm.SortUtil; 3n.+_jQ>s  
&%|xc{i  
/** %-h7Z3YcN  
* @author treeroot ~u_K& X  
* @since 2006-2-2 17V\2=Io  
* @version 1.0 ]uBT &  
*/ F`YFo)W  
public class MergeSort implements SortUtil.Sort{ paq8L{R  
bajC-5R1k  
/* (non-Javadoc) _N>wzkJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kN'|,eKH4  
*/ 7j@^+rkr3f  
public void sort(int[] data) { G*)s%2c>h  
int[] temp=new int[data.length]; (A7T}znG  
mergeSort(data,temp,0,data.length-1); YYTO,4  
} &GXtdO>;Zv  
XoDJzrL#  
private void mergeSort(int[] data,int[] temp,int l,int r){ )x$!K[=  
int mid=(l+r)/2; ,3wI~ j=  
if(l==r) return ; z7'n, [  
mergeSort(data,temp,l,mid); 7,pjej  
mergeSort(data,temp,mid+1,r); pu\b`3C(  
for(int i=l;i<=r;i++){ 68v xI|EZ  
temp=data; ?~F]@2)5w  
} 06PhrPVa!\  
int i1=l; /-DKV~  
int i2=mid+1; DWF >b  
for(int cur=l;cur<=r;cur++){  )v${&H  
if(i1==mid+1) '4J&Gpx  
data[cur]=temp[i2++]; 8pX f T%]  
else if(i2>r) Sp<hai  
data[cur]=temp[i1++]; 1zdYBb6;j  
else if(temp[i1] data[cur]=temp[i1++]; 1P5*wNF  
else ~GNyE*t/Y  
data[cur]=temp[i2++]; bcq@N  
} f?2zLE>u  
} .[edln  
pO\ S#GnX  
} re7!p(W?,  
b0r,h)R  
改进后的归并排序: zSEr4^Dk4  
V8-4>H}Cb/  
package org.rut.util.algorithm.support; Wl,%&H2S<  
+ckMT3  
import org.rut.util.algorithm.SortUtil; slu$2-H  
0w^jls  
/** \U==f &G?J  
* @author treeroot %0NLRfp  
* @since 2006-2-2 R|/Wz/$1A  
* @version 1.0 uEBQoP2  
*/ YavfjS:2  
public class ImprovedMergeSort implements SortUtil.Sort { ri_P;#lz  
+nU',E  
private static final int THRESHOLD = 10; Xfj)gPt}  
CKJAZ2  
/* 4#TnXxL  
* (non-Javadoc) #o"tMh!f  
* OlIT|bzkb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .=?Sz*3  
*/ t$aVe"uM  
public void sort(int[] data) { 6!*K/2:O  
int[] temp=new int[data.length]; OMl8 a B9  
mergeSort(data,temp,0,data.length-1); j6`6+W=S(  
} $B<~0'6}  
C,[ L/!  
private void mergeSort(int[] data, int[] temp, int l, int r) { @=CLeQG`  
int i, j, k; TLy ;4R2Nn  
int mid = (l + r) / 2; &q.)2o#Q.  
if (l == r) O ,l\e 3;  
return; x]H3Y3  
if ((mid - l) >= THRESHOLD) ^GN5vT+:'  
mergeSort(data, temp, l, mid); `hzd|GmX  
else 2K Pqu:lv  
insertSort(data, l, mid - l + 1); 'zE: fLo  
if ((r - mid) > THRESHOLD) F/)f,sZF  
mergeSort(data, temp, mid + 1, r); ki#y&{v9Be  
else K/DH / r  
insertSort(data, mid + 1, r - mid); XnD0eua#  
5Qb;2!  
for (i = l; i <= mid; i++) { %?@x]B9Y8E  
temp = data; =1O?jrl~q  
} AD(xaQ&T  
for (j = 1; j <= r - mid; j++) { e,^pMg~  
temp[r - j + 1] = data[j + mid]; }Bd_:#.mw  
} Lg8 ]dBXu  
int a = temp[l]; *<w3" iq  
int b = temp[r]; ?.8<-  
for (i = l, j = r, k = l; k <= r; k++) { DQcWq'yY^  
if (a < b) { 0(\p<qq  
data[k] = temp[i++]; .hxin [Y  
a = temp; D^$]>-^  
} else { S=4R5igrC  
data[k] = temp[j--]; V_jiOT!  
b = temp[j]; +5#x6[  
} v Xc!Zg~  
} /=bSt  
} cY{I:MA+h@  
t`uc3ta"9  
/** (yfXMp,x  
* @param data ]XY0c6 <  
* @param l 4AJ9`1d4  
* @param i P> |Ef~j  
*/ g083J}08  
private void insertSort(int[] data, int start, int len) { ^mAJ[^%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q Qi@>v|d  
} V w7WK  
}  70{RDj6{  
} @#A!w;bz  
} T=.-Cl1A  
UB a-  
堆排序: -E:(w<];  
n7@j}Q(&?  
package org.rut.util.algorithm.support; @$Yb#$/  
A^8x1ydZ  
import org.rut.util.algorithm.SortUtil; Mg+4huT  
- gB{:UYi3  
/** !1("(Eb  
* @author treeroot !W(`<d]68:  
* @since 2006-2-2 lelMt=  
* @version 1.0 SGQD ro=l  
*/ Jlz9E|*qV  
public class HeapSort implements SortUtil.Sort{ ]/a g*F  
7O"hiDQ  
/* (non-Javadoc) ("b*? : B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Or2iuO%-,  
*/ yk`)Cq%=;  
public void sort(int[] data) { 3\]~!;dI  
MaxHeap h=new MaxHeap(); ,^HS`!s[ E  
h.init(data); L(;.n>/  
for(int i=0;i h.remove(); .3(;9};  
System.arraycopy(h.queue,1,data,0,data.length); zqY)dk  
} ]uAS+shQ&  
'\ XsTs#L  
private static class MaxHeap{ gXF.on4B  
/ xs9.w8-  
void init(int[] data){ /;7ID41  
this.queue=new int[data.length+1]; ]?M)NRk%S  
for(int i=0;i queue[++size]=data; .5 ]{M\aA  
fixUp(size); n?}5!  
} jK e.gA  
} _%;M9Sg3  
u|T%Xy=LU  
private int size=0; Fk aXA.JE  
v:?o3 S  
private int[] queue; 9Eu #lV  
]r!QmWw~V  
public int get() { 6A.P6DW  
return queue[1]; {79qtq%W{  
} * O5:  
vn``0!FX  
public void remove() { V\"1wV~E  
SortUtil.swap(queue,1,size--); .8:+MW/  
fixDown(1); )Y~xIj >  
} a&N%|b K  
file://fixdown Vli3>K&  
private void fixDown(int k) { -( (Z@T1k  
int j; O <>#>[  
while ((j = k << 1) <= size) { s+'XQs^{aj  
if (j < size %26amp;%26amp; queue[j] j++; !:dL~n  
if (queue[k]>queue[j]) file://不用交换 b#A(*a_gN  
break; $M39 #a  
SortUtil.swap(queue,j,k); :,47rN,qa  
k = j; Hk~k@Wft  
} + LS3T^  
} _=?2 3  
private void fixUp(int k) { #>XeR>T  
while (k > 1) { ]{Z8  
int j = k >> 1; %2}C'MqS  
if (queue[j]>queue[k]) EDtCNqBS~2  
break; # 3.\j"b  
SortUtil.swap(queue,j,k); IqNpLh|[  
k = j; rpSr^slr  
} k8 u%$G  
} m9woredS,  
"Tv:*L5  
} `[OXVs,7"  
GyuV %  
} =&N$Vqn  
:6zC4Sr^  
SortUtil: =},{8fZ4  
&kiF/F 1  
package org.rut.util.algorithm; TOrMXcn!/  
0d";Hh:  
import org.rut.util.algorithm.support.BubbleSort; aiJnfU]W  
import org.rut.util.algorithm.support.HeapSort; bs BZ E  
import org.rut.util.algorithm.support.ImprovedMergeSort; R3Ee%0QK  
import org.rut.util.algorithm.support.ImprovedQuickSort; Fe5jdV<  
import org.rut.util.algorithm.support.InsertSort;  cLAe sj  
import org.rut.util.algorithm.support.MergeSort; Tt%}4{"  
import org.rut.util.algorithm.support.QuickSort; Nq_A8Ph9  
import org.rut.util.algorithm.support.SelectionSort; VVFV8T4  
import org.rut.util.algorithm.support.ShellSort; jWSb5#Pw  
^4 8\>-Q\  
/** 7OE[RX8!f  
* @author treeroot $o"g73`3  
* @since 2006-2-2 bNXAU\M^  
* @version 1.0 iE=P'"I  
*/ ewym 1}o  
public class SortUtil { |by@ :@*y  
public final static int INSERT = 1; /p 5=i  
public final static int BUBBLE = 2; vf N#NY6  
public final static int SELECTION = 3; &wb9_? ir-  
public final static int SHELL = 4; p/3BD&6  
public final static int QUICK = 5; [Y$V\h=V  
public final static int IMPROVED_QUICK = 6; L1{T ?aII  
public final static int MERGE = 7; rn H}#u+  
public final static int IMPROVED_MERGE = 8; rH.gF43O:  
public final static int HEAP = 9; p1~*;;F  
6g~+( ({lQ  
public static void sort(int[] data) { D^|7#b,zcH  
sort(data, IMPROVED_QUICK); G5;V.#"Z[  
} LN\[Tmd &  
private static String[] name={ Z\'wm'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" PtqGX=u  
}; 8 URj1 W  
Fg4@On[,i  
private static Sort[] impl=new Sort[]{ :~D]; m  
new InsertSort(), Zih ?Bm  
new BubbleSort(), >C# kqxfg  
new SelectionSort(), cQn)^jx=  
new ShellSort(), [@|be.g  
new QuickSort(), A="fj  
new ImprovedQuickSort(), Ye@t_,)x  
new MergeSort(), n,sY\=vB  
new ImprovedMergeSort(), `m, Ki69.  
new HeapSort() N+J>7_k   
}; s/h7G}Mu  
ul=7>";=|  
public static String toString(int algorithm){ ;s}3e#$L  
return name[algorithm-1]; 7k~Lttuk  
} ]F+K|X9-  
1`QsW&9=b  
public static void sort(int[] data, int algorithm) { lQL:3U0DjU  
impl[algorithm-1].sort(data); tr=@+WHp  
} ]u0Jd#@  
a_{6Qdl  
public static interface Sort { 1eD.:_t4  
public void sort(int[] data); :<%vE!$  
} c3#q0Ma  
Vo >Xp  
public static void swap(int[] data, int i, int j) { ="3,}qR  
int temp = data; K}K)`bifw  
data = data[j]; UJn/s;$.e  
data[j] = temp; 8gI\zgS  
} n`.#59-Hx  
} si?HkJv5  
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