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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。 pxedj  
插入排序: h;r^9g  
O_th/hl  
package org.rut.util.algorithm.support; Sw-2vnSdM  
uTrzC+\aU  
import org.rut.util.algorithm.SortUtil; Ev [?5R  
/** L1Yj9i  
* @author treeroot k$J!,!q  
* @since 2006-2-2 b 1Wz  
* @version 1.0 sIaehe'B  
*/ Xg_l4!T_l  
public class InsertSort implements SortUtil.Sort{ bVN?7D(  
\vV]fX   
/* (non-Javadoc) 4Jc~I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OT|0_d?bD  
*/ Th\T$T`X$  
public void sort(int[] data) { iRG6Cw2  
int temp; G}NqVbZ9]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z+wegF  
} -OD&x%L*{3  
} Y*#TfWv:  
} T5T[$%]6  
5{1=BZftZ  
} v<l]K$5J&  
+CSR!  
冒泡排序: FS @55mQ  
wEI? 9  
package org.rut.util.algorithm.support; &%/T4$'+Y+  
,g"JgX  
import org.rut.util.algorithm.SortUtil; UM21Cfqex  
N;!!*3a9=  
/** !-%%94Q  
* @author treeroot b~)2`l  
* @since 2006-2-2 J[S!<\_!  
* @version 1.0 s)-bOZi  
*/ !a!4^zqp  
public class BubbleSort implements SortUtil.Sort{ x=x%F;  
M80O;0N%A  
/* (non-Javadoc) T4ugG?B*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c3PA<q[  
*/ <)sL8G9Y  
public void sort(int[] data) { *(]ZdB_2  
int temp; LZs'hA<L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ oGg<s3;UND  
if(data[j] SortUtil.swap(data,j,j-1); ]E DC s?,  
} QpoC-4F  
} x6Gl|e[jv  
} Tl]yl$  
} w6Mv%ZO_  
#NL'r99D/o  
} G6x'Myg I  
&l_}yf"v  
选择排序: .~rg#*]^  
}K,3SO(:  
package org.rut.util.algorithm.support; 9}fez)m:g0  
{:n1|_r4Z  
import org.rut.util.algorithm.SortUtil; seP h%Sa_  
6^BT32,'  
/** -G_3B(]`  
* @author treeroot =9p3^:S  
* @since 2006-2-2 4_'BoU4  
* @version 1.0 m&(qr5>b  
*/ v|]"uPxH?  
public class SelectionSort implements SortUtil.Sort { psz0q|  
%hH> %  
/* Up_"qD6  
* (non-Javadoc) W* v3B.  
* A>FWvlLw'm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N Mx:Jh-YN  
*/ Y!Io @{f  
public void sort(int[] data) { #67 7,dn  
int temp; ;7H^;+P  
for (int i = 0; i < data.length; i++) { +/M%%:>mY  
int lowIndex = i; @*=5a (#  
for (int j = data.length - 1; j > i; j--) { jPx}-_jM  
if (data[j] < data[lowIndex]) { ST g} Z  
lowIndex = j; c"1Z,M;G  
} o Qo5y_o~  
} %yl17:h#  
SortUtil.swap(data,i,lowIndex); Y)(yw \&v  
} 2vsV :LS.  
} *_}0vd  
pW>{7pXn  
} AUIp vd  
uq54+zC  
Shell排序: 7~k=t!gTY  
zf^|H% ~^  
package org.rut.util.algorithm.support; "{t]~urLd  
/s=veiH  
import org.rut.util.algorithm.SortUtil; qn |~YXn  
9zIqSjos"  
/** [9NrPm3d  
* @author treeroot Qj(ppep\U"  
* @since 2006-2-2 39F e#u  
* @version 1.0 * >8EMq\^  
*/ iXvrZofE  
public class ShellSort implements SortUtil.Sort{ @_#\qGY  
x.] tGS  
/* (non-Javadoc) jcBZ#|B7;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V RD^>Gi  
*/ AS;qJ)JfzQ  
public void sort(int[] data) { HSAr6h  
for(int i=data.length/2;i>2;i/=2){ X:g#&e_  
for(int j=0;j insertSort(data,j,i); v+SdjFAY  
} d~{$,"!-f  
} 2' ^7G@%  
insertSort(data,0,1); {s*2d P)  
} i27)c)\BM  
Qh-:P`CN  
/** tAI v+L  
* @param data 6DgdS5GhT_  
* @param j j:/Z_v'  
* @param i ecQ,DOX|b  
*/ 8Gnf_lkI  
private void insertSort(int[] data, int start, int inc) { uKvdL "  
int temp; X;l/D},.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^w<aS w  
} X ,^([$  
} JEMc_ngR!  
} }^p<Y5{b  
m]8*k=v  
} W\;|mEEu  
e t@:-}  
快速排序: #(i pF  
~a&V sC#  
package org.rut.util.algorithm.support; FU>KiBV#  
-)}Z $;1a  
import org.rut.util.algorithm.SortUtil; C"_ Roir?  
h0g?=hJq  
/** ~dpf1fP  
* @author treeroot Qx8(w"k*  
* @since 2006-2-2 Z*UVbyC  
* @version 1.0 .kPNWNrw  
*/ K5 BL4N  
public class QuickSort implements SortUtil.Sort{ eNVuw:Q+  
u'>94Gm}  
/* (non-Javadoc) A>2_I)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G :k'm^k  
*/ 6pbCQ q  
public void sort(int[] data) { E]GbLU;TH  
quickSort(data,0,data.length-1); A~<!@`NjB  
} [(5.?  
private void quickSort(int[] data,int i,int j){ BK6 X)1R  
int pivotIndex=(i+j)/2; } e+`Kxy  
file://swap 0`-b57lF&  
SortUtil.swap(data,pivotIndex,j); 5Pn.c!  
%DXBl:!Y`  
int k=partition(data,i-1,j,data[j]); K%x]:|,>M  
SortUtil.swap(data,k,j); IM/xBP  
if((k-i)>1) quickSort(data,i,k-1); x-X~'p'f  
if((j-k)>1) quickSort(data,k+1,j); 6l;2kztGp  
Fs%`W4/  
} .SER,],P  
/** ljOY;WV3  
* @param data "`4ky ]  
* @param i mTxqcQc:7  
* @param j N!3Tg564j  
* @return $D!/v)3  
*/ 2b^Fz0 w4  
private int partition(int[] data, int l, int r,int pivot) { [WG\w j.  
do{ *q k7e[IP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m6n%?8t  
SortUtil.swap(data,l,r); S)j( %g  
} :-JryiI  
while(l SortUtil.swap(data,l,r); <<A#4!f  
return l; n-l_PhPQ`  
} CW?Z\  
ftR& 5 !Wm  
} 83t/ \x,Q  
cGgfCF^`  
改进后的快速排序: ?Y,^Moc:  
'xx M0Kn`  
package org.rut.util.algorithm.support; 7H< IO`  
*URT-+'  
import org.rut.util.algorithm.SortUtil; tzIP4CR~F&  
"V 26\  
/** p'2IlQ\  
* @author treeroot 9*ZlNZ  
* @since 2006-2-2 >$L7J=Em  
* @version 1.0 E1OrL.A6  
*/ mY4pvpZw8  
public class ImprovedQuickSort implements SortUtil.Sort { ;<m`mb4x[  
7_76X)gIV  
private static int MAX_STACK_SIZE=4096; $Vq5U9-  
private static int THRESHOLD=10; d8w3Oz54  
/* (non-Javadoc) prz COw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~U"m"zpLP  
*/ &s vg<UZ  
public void sort(int[] data) { PRaVe,5a  
int[] stack=new int[MAX_STACK_SIZE]; n{sk  
&|#[.ti1  
int top=-1; B#jnM~fJz  
int pivot; nv@z;#&  
int pivotIndex,l,r; |`#fX(=  
E(|A"=\  
stack[++top]=0; ; /K6U  
stack[++top]=data.length-1; #YE?&5t  
&TQ~!ZMOR"  
while(top>0){ i l@>b  
int j=stack[top--]; Z6i~Dy3  
int i=stack[top--]; PD.$a-t  
S, AxrQc  
pivotIndex=(i+j)/2; [B)!  
pivot=data[pivotIndex]; 5 k3m"*  
fP|[4 ku  
SortUtil.swap(data,pivotIndex,j); In96H`  
'A7!@hVy  
file://partition 8lYA6A  
l=i-1; 1?FG3X 5  
r=j; DMG~56cTO,  
do{ Jp]?tlT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K xX[8  
SortUtil.swap(data,l,r); iiIns.V  
} _Ik?WA_;  
while(l SortUtil.swap(data,l,r); ra T9  
SortUtil.swap(data,l,j); m]>zdP+  
4F#H$`:[  
if((l-i)>THRESHOLD){ %(/E `  
stack[++top]=i; -?)^ hbr  
stack[++top]=l-1; +yWD>PY(  
} |di(hY|  
if((j-l)>THRESHOLD){ .k]`z>uv  
stack[++top]=l+1; lTMY|{9  
stack[++top]=j; s"`~Xnf  
} m.m6.  
:&vX0 Ce:  
} j}ob7O&U'w  
file://new InsertSort().sort(data); 0@-4.IHl  
insertSort(data); #:gl+  
} [8sYEh  
/** OVi < d  
* @param data Ul_Zn  
*/ OlRXgJ  
private void insertSort(int[] data) { rxgSQ+G_  
int temp; $lf/Mg_H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B\RAX#  
} Zpkd8@g@  
} iv~R4;;)  
} Nt@|l7Xl*  
s"=TM$Vb  
} 8c)GUx  
>^jBE''  
归并排序: $45|^.b  
X+XDfEt:Q  
package org.rut.util.algorithm.support; -K =.A* }  
Yvo*^jv  
import org.rut.util.algorithm.SortUtil; @Z ==B%`  
1Q(KZI  
/** mufGv%U2  
* @author treeroot o{,I O!q  
* @since 2006-2-2 ,XEIg  
* @version 1.0 FprdP*/  
*/ s`bGW1#io  
public class MergeSort implements SortUtil.Sort{ 6~%><C  
;m7G8)I  
/* (non-Javadoc) TUnAsE/J&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iN Oj @3x  
*/ w<`0D)mQ  
public void sort(int[] data) { 8)1q,[:M  
int[] temp=new int[data.length]; metn&  
mergeSort(data,temp,0,data.length-1); ^^"zjl*^  
} ~-A"j\gi"  
UF!qp  
private void mergeSort(int[] data,int[] temp,int l,int r){ `&D#P%  
int mid=(l+r)/2; RBrb7D{  
if(l==r) return ; ~ps,U  
mergeSort(data,temp,l,mid); hAf/&yA@  
mergeSort(data,temp,mid+1,r); Z8$BgP  
for(int i=l;i<=r;i++){ (uvQ/!  
temp=data; }( F:U#  
} z;1dMQ,#  
int i1=l; T$D(Y`zdn  
int i2=mid+1; ]M*`Y[5"  
for(int cur=l;cur<=r;cur++){ I:TbZ*vi~  
if(i1==mid+1) u @Ze@N%  
data[cur]=temp[i2++]; S=r0tao,!v  
else if(i2>r) Tx PFl7,r  
data[cur]=temp[i1++]; A,_O=hA2I  
else if(temp[i1] data[cur]=temp[i1++]; ; R+>}6  
else >XgJo7u  
data[cur]=temp[i2++]; e n~m)r3&  
} Sxq@W8W  
} Qf( A  
T5u71C_wmt  
} jlj ge=#c2  
66pjWS {X  
改进后的归并排序: .b]s Q'  
"KP]3EyPc  
package org.rut.util.algorithm.support; [y9a.*]u/@  
g9" wX?*  
import org.rut.util.algorithm.SortUtil; 61H_o7XXk  
Xb%Q%"?~  
/** vWoppt  
* @author treeroot !ddyJJ^a  
* @since 2006-2-2 Q[#}Oh6$  
* @version 1.0 N4ZV+ |  
*/ ({j8|{)+  
public class ImprovedMergeSort implements SortUtil.Sort { ?2&= +QaT  
dHIk3j-!  
private static final int THRESHOLD = 10; S3Y.+. 0U  
GmR3 a  
/* e El)wZ,A  
* (non-Javadoc) H7tv iSTd  
* jvB[bS`<H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -SM_JR3<  
*/ $$m0mK  
public void sort(int[] data) { P5?VrZy  
int[] temp=new int[data.length]; > mO*.'Gm  
mergeSort(data,temp,0,data.length-1); pRun5 )7  
} 4tCM 2it%  
I*N"_uKU  
private void mergeSort(int[] data, int[] temp, int l, int r) { eI$ V2  
int i, j, k; Z>`\$1CI  
int mid = (l + r) / 2; )7*'r@  
if (l == r) cK1^jH<|  
return; $~6MR_Yq  
if ((mid - l) >= THRESHOLD)  J| N 6r  
mergeSort(data, temp, l, mid); <{cY2cx~3  
else 6 ^3RfF^W  
insertSort(data, l, mid - l + 1); o`c+eMwr(  
if ((r - mid) > THRESHOLD) ~Tt@ v`}  
mergeSort(data, temp, mid + 1, r);  C^"zU>W_  
else eY :"\c3  
insertSort(data, mid + 1, r - mid); rByth,|  
vIJ5iLF  
for (i = l; i <= mid; i++) { [<53_2]~  
temp = data; Eto"B"  
} OCrTzz8  
for (j = 1; j <= r - mid; j++) { V#w$|2  
temp[r - j + 1] = data[j + mid]; jcqUY+T$  
} `TJhH<z"%  
int a = temp[l]; ^ nPy(Q0  
int b = temp[r]; :o8`2Z*g  
for (i = l, j = r, k = l; k <= r; k++) {  nz?[  
if (a < b) { xJ$uoy3+  
data[k] = temp[i++]; zTcz+3x  
a = temp; veq3t$sj  
} else { A8&@Vxdz  
data[k] = temp[j--]; ;=,-C ;`  
b = temp[j]; `6VnL)  
} C!^A\T7p  
} MOQ6&C`7q  
} k3$'K}=d  
,ho",y  
/** g,\kLTg  
* @param data -]0:FKW  
* @param l CBd%}il  
* @param i &tZIWV1&  
*/ v<v;ZR)  
private void insertSort(int[] data, int start, int len) { 06&;GW!-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \]<R`YMV  
} h&j2mv(  
} DD=X{{;D\"  
} ( 3B1X  
} Em&3g  
5Hu[*  
堆排序: anW['!T9{s  
~Yd[&vpQ  
package org.rut.util.algorithm.support; ^rJTlh 9  
&pzL}/u  
import org.rut.util.algorithm.SortUtil; )L9eLxI  
Trs~KcsD  
/** E'\gd7t ;  
* @author treeroot t[q2 W"#.  
* @since 2006-2-2 y7UU'k`  
* @version 1.0 xH2'PEjFM  
*/ r7W.}n*  
public class HeapSort implements SortUtil.Sort{ R7Qj<,  
~}b0zL  
/* (non-Javadoc) n3$=&   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q$U.vF7BnP  
*/ }BM`4/  
public void sort(int[] data) { PFp!T [)  
MaxHeap h=new MaxHeap(); IQ<G .  
h.init(data); Sk53Lc  
for(int i=0;i h.remove(); bQ>wyA+G&E  
System.arraycopy(h.queue,1,data,0,data.length); %EU_OS(u.{  
} F8?,}5j  
f0 g/`j@Up  
private static class MaxHeap{ n@+?tYk*e  
.eIs$  
void init(int[] data){ g5|&6+t.  
this.queue=new int[data.length+1]; HVA:|Z19  
for(int i=0;i queue[++size]=data; 7=N%$]DKZ  
fixUp(size); 4C?{p%3c  
} PJZ;wqTD_  
} l\ dPfJ  
}K 'A/]'  
private int size=0; SlB`ktcfI  
a&G{3#l  
private int[] queue; N>3{!K>/Y:  
R7rM$|n=o  
public int get() {  _:\rB  
return queue[1]; Q(<A Yu  
} 'G65zz  
sBZn0h@  
public void remove() { ?M'CTz}<\  
SortUtil.swap(queue,1,size--); #6c,_!  
fixDown(1); ** m8 HD  
} 2j4202  
file://fixdown &PPnI(s^K  
private void fixDown(int k) { EC$F|T0f  
int j; Z]Xa:[  
while ((j = k << 1) <= size) { qGag{E5!  
if (j < size %26amp;%26amp; queue[j] j++; YL*FjpVW  
if (queue[k]>queue[j]) file://不用交换 >A D!)&c  
break; W2XWb<QSEV  
SortUtil.swap(queue,j,k); :a Cf@:']  
k = j; 9K}DmS  
} 'E#L6,&  
} H 2I  
private void fixUp(int k) { x(u.(:V  
while (k > 1) { Q#yHH]U)X  
int j = k >> 1; mH;t)dT  
if (queue[j]>queue[k]) N_:!uR  
break; Lfx a^0  
SortUtil.swap(queue,j,k); e6'0g=Y#   
k = j; e;=R8i  
} EUt2 S_2P  
} z}J~X%}e  
!Yo2P"  
} ^) s6`:  
vrmMEWPV  
} JUw|nUnl?  
NUiv"tAY  
SortUtil: r^.9 |YM5  
o]p$ w[5  
package org.rut.util.algorithm; o!h::j0,~  
w$$pTk|&n  
import org.rut.util.algorithm.support.BubbleSort; "d/54PKWx  
import org.rut.util.algorithm.support.HeapSort; I[Bp}6G  
import org.rut.util.algorithm.support.ImprovedMergeSort; I|*<[/)]y  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z]LP18m9kl  
import org.rut.util.algorithm.support.InsertSort; /b{@']  
import org.rut.util.algorithm.support.MergeSort; #pRbRT9  
import org.rut.util.algorithm.support.QuickSort; ~Fvz&dO  
import org.rut.util.algorithm.support.SelectionSort; H)TKk%`7  
import org.rut.util.algorithm.support.ShellSort; "=]'"'B:  
0KExB{K  
/** )]Zdaw)X  
* @author treeroot 7mnO60Z8N  
* @since 2006-2-2 >Heuf"V  
* @version 1.0 *9KT@"v  
*/ Jyd[Sc)  
public class SortUtil { Dp*:oMATx0  
public final static int INSERT = 1; @QJPcF"  
public final static int BUBBLE = 2; i`9}">7v~  
public final static int SELECTION = 3; &gV9h>Kc#  
public final static int SHELL = 4; `Q+O#l?  
public final static int QUICK = 5; 0p3) t  
public final static int IMPROVED_QUICK = 6; X..M!3W  
public final static int MERGE = 7; )sIzBC  
public final static int IMPROVED_MERGE = 8; {nZP4jze  
public final static int HEAP = 9; zwUZ*Se  
S5m.oHJI*  
public static void sort(int[] data) { }}Q h_(  
sort(data, IMPROVED_QUICK); _JpTHpqu  
}  w D  
private static String[] name={  [Ketg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C.=%8|Zy  
}; F$v^S+Ch  
cPL6(&7  
private static Sort[] impl=new Sort[]{ l}S96B  
new InsertSort(), \RVfgfe  
new BubbleSort(), "OP$n-*@%  
new SelectionSort(), uG.`  
new ShellSort(), @B+8' b$9  
new QuickSort(), |&S^L}V.C  
new ImprovedQuickSort(), h{]0 H'g  
new MergeSort(), qoQ,3&<  
new ImprovedMergeSort(), wMm+E "}W  
new HeapSort() &_QD1 TT  
}; Nsy>qa7  
,uO?f1  
public static String toString(int algorithm){ |.~2C1 4[  
return name[algorithm-1]; 2sBYy 8.r  
} o 8^!wGY  
4. %/u@rAi  
public static void sort(int[] data, int algorithm) { z2.OR,R}]  
impl[algorithm-1].sort(data); ODCN~7-@  
} H-& ktQWK3  
k fOd|-  
public static interface Sort { vKbGG   
public void sort(int[] data); :d<F7`k H  
} 0}_1 ZU  
-oju-gf K  
public static void swap(int[] data, int i, int j) { #B$_ily)  
int temp = data; X=Y>9  
data = data[j]; D#ED?Lqf  
data[j] = temp; PVq y\i  
} pkIJbI{aS  
} (:# 4{C  
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