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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。 %b(non*  
插入排序: no lLeRE1  
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package org.rut.util.algorithm.support; ,c_NXC^X?  
om'DaG`A  
import org.rut.util.algorithm.SortUtil; }^Kye23  
/** = ;"$t_t  
* @author treeroot sVJwe\!  
* @since 2006-2-2 KZ}F1Mr  
* @version 1.0 K,\Bj/V(  
*/ ;p}X]e l}  
public class InsertSort implements SortUtil.Sort{ `:fc*n,*  
GMO|A.bzzN  
/* (non-Javadoc) Q\4nduQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]jL`*tI\S  
*/ d 9n{jv|  
public void sort(int[] data) { C/L+:b&x~  
int temp; t!"XQ$g'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t6H9Q>*  
} E5}wR(i,4  
} |p1 pa4%}  
} [rt+KA  
*l-(tp5  
} 5%E.UjC  
:jp4 !0w  
冒泡排序: d=B DR^/wA  
8O5@FU 3  
package org.rut.util.algorithm.support; uBe1{Z  
#n_uELE  
import org.rut.util.algorithm.SortUtil; "/-T{p;.  
v9[[T6t/'  
/** @9!,]n  
* @author treeroot &E>zvRBQ  
* @since 2006-2-2 >{dj6Wo  
* @version 1.0 Q*+_%n1 /  
*/ Fq<;-  
public class BubbleSort implements SortUtil.Sort{ A%G \ AT  
{,|J?>{  
/* (non-Javadoc) aDik1Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @?GOOD_i  
*/ {|jG_  
public void sort(int[] data) { mne=9/sE"  
int temp; cO#e AQf7  
for(int i=0;i for(int j=data.length-1;j>i;j--){  /_r g*y*  
if(data[j] SortUtil.swap(data,j,j-1); Z-!W#   
} +r+H`cT@  
} T&2aNkuG  
} hkO)q|1  
} B(GcPDj(K  
z5CWgN  
} dpBG)Xzoyv  
%` c?cB  
选择排序: ]byj[Gd  
C<.t'|  
package org.rut.util.algorithm.support; o 6$Q>g`]  
6c3+q+#J2  
import org.rut.util.algorithm.SortUtil; 7]q$ sQ  
=%:mZ@x'  
/** oy-Qy  
* @author treeroot 1f 0"z1   
* @since 2006-2-2 uW&P1 'X  
* @version 1.0 G;+hc%3y  
*/ Xf.w( -  
public class SelectionSort implements SortUtil.Sort { $+Hv5]/hb  
|4i,Vkfhe  
/* &8Cuu$T9)  
* (non-Javadoc) \jdpL1  
* N~ -N Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /hue]ZaQq  
*/ #![i {7  
public void sort(int[] data) { #]ii/Et#x  
int temp; JF>mybB  
for (int i = 0; i < data.length; i++) { ~>@Dn40  
int lowIndex = i; n8zh;vuJ  
for (int j = data.length - 1; j > i; j--) { A$RN7#  
if (data[j] < data[lowIndex]) { dG|srgk+  
lowIndex = j; lqOv_q  
} |52VHW8 c  
} _Y*: l7  
SortUtil.swap(data,i,lowIndex); _Gy*";E  
} U~ SK 'R  
} 31|Vb  
#Dx$KPD  
} #jV6w=I  
:L9\`&}FS  
Shell排序: mp~\ioI*d  
l\5}\9yS  
package org.rut.util.algorithm.support; nTj Q4y  
r]'AdJFt  
import org.rut.util.algorithm.SortUtil; 0[0</"K%1m  
^HHJ.QR  
/** hHoc7  
* @author treeroot ?x]T &S{  
* @since 2006-2-2 Y 3[<  
* @version 1.0 ~s{$&N  
*/ Hu x#v>e  
public class ShellSort implements SortUtil.Sort{ tiwhG%?2  
&%J{C3Q9  
/* (non-Javadoc) `c{i +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2o/}GIKj  
*/ lN1T\  
public void sort(int[] data) { G:' -|h  
for(int i=data.length/2;i>2;i/=2){ lXm]1 *<  
for(int j=0;j insertSort(data,j,i); +98~OInySZ  
} z]\0]i  
} f&^K>Jt1@#  
insertSort(data,0,1); 2N(c&Dzkh`  
} *8"5mC ;"  
sBF>a|  
/** 2NsI3M4$8  
* @param data ~z>2`^Z"  
* @param j M&@9B)|=  
* @param i rMpb  
*/ 34]f[jJ|  
private void insertSort(int[] data, int start, int inc) { ux VXnQQ  
int temp; qVJV9n  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +t/ VF(!  
} L3X>v3CZ5  
} MsX`TOyO!  
} \8Fe56  
!=cW+=1  
} } RG  
|,t#Au}61  
快速排序: |/ZpZ7  
6P?   
package org.rut.util.algorithm.support; &{y- }[~  
]O7I7K  
import org.rut.util.algorithm.SortUtil; T -C2V$1  
C/_W>H_   
/** E+>Qpy  
* @author treeroot OMO.-p  
* @since 2006-2-2 hRxR2  
* @version 1.0 -UPdgZ_Vxz  
*/ eNu `\  
public class QuickSort implements SortUtil.Sort{ 0l^-[jK)  
RH6qi{)i!  
/* (non-Javadoc) q+e'=0BHd:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <G\q/!@_  
*/  ~;il{ym  
public void sort(int[] data) { 5"^$3&)  
quickSort(data,0,data.length-1); s+C&\$E  
} U $X"W'  
private void quickSort(int[] data,int i,int j){ hUB _[#8#  
int pivotIndex=(i+j)/2; J'b *^K  
file://swap 0j7\.aaK  
SortUtil.swap(data,pivotIndex,j); y&-j NOKLM  
uUwwR(R  
int k=partition(data,i-1,j,data[j]); VCNg`6!x  
SortUtil.swap(data,k,j); ^0ipM/Lg  
if((k-i)>1) quickSort(data,i,k-1); gI'4g ZH  
if((j-k)>1) quickSort(data,k+1,j); C{-e(G`Yd  
. sgV  
} P8).Qn  
/** ^yu0Veypy  
* @param data 536H*HdN  
* @param i HPg@yx"U  
* @param j b,]h X  
* @return /b@8#px  
*/ o.k eM4OQ  
private int partition(int[] data, int l, int r,int pivot) { EUu"H` E+  
do{ 2"c $#N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *(PGL YK  
SortUtil.swap(data,l,r); /F4rbL^:  
} GFYAg  
while(l SortUtil.swap(data,l,r); SwV0q  
return l; i~MCY.F  
} pD eqBO  
r-9P&*1  
} (XX6M[M8  
,<d[5;7x  
改进后的快速排序: |K,9EM3  
'0p 5|[ZD  
package org.rut.util.algorithm.support; bT|a]b:  
O1ofN#u  
import org.rut.util.algorithm.SortUtil; nz3j";d  
C;1A$]bk  
/** T\{ on[O  
* @author treeroot 2+s_*zM-  
* @since 2006-2-2 <_dyUiT$J  
* @version 1.0 sbjAZzrX2i  
*/ hJ (Q^Z  
public class ImprovedQuickSort implements SortUtil.Sort { S1E =E5  
lQ<2Vw#Yl  
private static int MAX_STACK_SIZE=4096; J{ P<^<m_  
private static int THRESHOLD=10; j#f+0  
/* (non-Javadoc) +?w 7Nm`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0~iC#lHO  
*/ (CJiCtAsl`  
public void sort(int[] data) { AE={P*g  
int[] stack=new int[MAX_STACK_SIZE]; c*-8h{}  
h3Nwxj~E  
int top=-1; .{1G"(z  
int pivot; 1XSA3;ZEc  
int pivotIndex,l,r; #g#vDR!  
W2D^%;mw  
stack[++top]=0; /`Yy(?,  
stack[++top]=data.length-1; J;W(}"cFq  
DJ_,1F  
while(top>0){ ! @{rk p  
int j=stack[top--]; u_;*Ay  
int i=stack[top--]; Sf);j0G,D  
QM\v ruTB  
pivotIndex=(i+j)/2; \V  /s  
pivot=data[pivotIndex]; jV]'/X<  
kTb.I;S  
SortUtil.swap(data,pivotIndex,j); |5 _bFB+&  
M#LQz~E  
file://partition bW(+Aw=O  
l=i-1; (~:k70V5  
r=j; +c.A|!-  
do{ "u~l+aW0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z4A a  
SortUtil.swap(data,l,r); r(h&=&T6  
} %_0,z`f  
while(l SortUtil.swap(data,l,r); Y]/(R"-2G  
SortUtil.swap(data,l,j); &I Iw>,,  
+-&N<U  
if((l-i)>THRESHOLD){ [HI&>dm=$  
stack[++top]=i; /=w9bUj5v  
stack[++top]=l-1; / d=i 0E3  
} DQ :w9  
if((j-l)>THRESHOLD){ vo )pT  
stack[++top]=l+1; *vc=>AEc  
stack[++top]=j; |7,|-s[R^  
} -}`ES]  
%;yDiQ!+  
} TU&6\]yF_  
file://new InsertSort().sort(data); s `HSTq2  
insertSort(data); `*cT79  
} agQzA/Xt  
/** 06"p ^#  
* @param data ZHUA M59bx  
*/ Xt~`EN  
private void insertSort(int[] data) { A`Q'I$fj  
int temp; mA}-hR%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &f'\9lO  
} 0* < gGC  
} 'c<vj jIg  
} \?c0XD  
bq[j4xH0X  
} RmxgCe(2a  
p.^mOkpt  
归并排序: N]R<EBq  
;"SnCBt:>  
package org.rut.util.algorithm.support; 5%"${ywI  
?#!Hm`\.  
import org.rut.util.algorithm.SortUtil; hO(8v&ns3  
jK/2n}q&]  
/** ]2(vO0~  
* @author treeroot z!;n\CV@  
* @since 2006-2-2 []:;8fY  
* @version 1.0 D.Rk{0se8  
*/ 3#huC=zbf  
public class MergeSort implements SortUtil.Sort{ 4v9zFJ<Z  
9;2PoW8  
/* (non-Javadoc) LO]D XW 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eT1b88_  
*/ ,Q4U<`ds!  
public void sort(int[] data) { In^MZ)?  
int[] temp=new int[data.length]; NLFs)6\  
mergeSort(data,temp,0,data.length-1); i)f3\?,,  
} 8v@6 &ras@  
dQ?4@  
private void mergeSort(int[] data,int[] temp,int l,int r){ @?iLz7SPk  
int mid=(l+r)/2; /:v+:-lU  
if(l==r) return ; \kcJF'JFA0  
mergeSort(data,temp,l,mid); H+vONg  
mergeSort(data,temp,mid+1,r); i3t=4[~oL  
for(int i=l;i<=r;i++){ yjs5=\@  
temp=data; R5 47  
} eO;i1>  
int i1=l; 6~zR(HzV{  
int i2=mid+1; 0fA42*s;  
for(int cur=l;cur<=r;cur++){ ;'l Hw]}O*  
if(i1==mid+1) v{`Z  
data[cur]=temp[i2++]; B+S &vV  
else if(i2>r) -q' np0H  
data[cur]=temp[i1++]; uMa: GDh7  
else if(temp[i1] data[cur]=temp[i1++]; 9 \i;zpN\  
else tk"L2t  
data[cur]=temp[i2++]; *6 -;iT8  
} [:sPZ{  
} pq_DYG]  
W7.O(s,32  
} l=D E|:  
+#8?y 5~q  
改进后的归并排序: k1Zu&4C\  
 =<fH RX`  
package org.rut.util.algorithm.support; &&$/>[0=.  
^@l_K +T  
import org.rut.util.algorithm.SortUtil; S!.aBAW  
u^a\02aV[  
/** 3U<\y6/  
* @author treeroot & tQHxiDX  
* @since 2006-2-2 S+>&O3m  
* @version 1.0 .O @bX)  
*/ 4 q}1  
public class ImprovedMergeSort implements SortUtil.Sort { |57KTiiNLI  
f^](D'L?D  
private static final int THRESHOLD = 10; g0I<Fan  
8yz A W&q  
/* 2n+j.  
* (non-Javadoc) zYpIG8"o5  
* heoOOP(#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }hyK/QUCoN  
*/ N%;Q[*d@/  
public void sort(int[] data) { y2>v'%]2  
int[] temp=new int[data.length]; Z)'jn8?P  
mergeSort(data,temp,0,data.length-1); 8OH<ppi  
} 1~8F&  
_/ j44q  
private void mergeSort(int[] data, int[] temp, int l, int r) { L`FsK64@  
int i, j, k; 7p3 ;b"'  
int mid = (l + r) / 2; /:"%m:-P  
if (l == r) + EG.p  
return; Noz+\O\  
if ((mid - l) >= THRESHOLD) 7c!oFwM  
mergeSort(data, temp, l, mid); asP>(Li  
else S;NChu?8  
insertSort(data, l, mid - l + 1); i_g="^  
if ((r - mid) > THRESHOLD) QNFA#`H  
mergeSort(data, temp, mid + 1, r); 1pXAPTV  
else ^q"p 8   
insertSort(data, mid + 1, r - mid); W6'+#Fp  
.6!]RA5!=  
for (i = l; i <= mid; i++) { !? ?Cxs'  
temp = data; pTUsdao^,  
} e;x`C  
for (j = 1; j <= r - mid; j++) { <9-tA\`8N  
temp[r - j + 1] = data[j + mid]; V)R-w`  
} hw_7N)}  
int a = temp[l]; X ~4^$x  
int b = temp[r]; SynxMUlA  
for (i = l, j = r, k = l; k <= r; k++) { ",E6)r  
if (a < b) { IOF~V)8k=  
data[k] = temp[i++]; d(, -13  
a = temp; 5<IUTso5h  
} else { /.'1i4Xa1P  
data[k] = temp[j--]; R-`{W:S  
b = temp[j]; Ec_ G9&  
} [KWF7GQi  
} |:!#k A  
} tRbZ^5x\@  
1}S_CR4XBs  
/** po=*%Zs*T  
* @param data ;}f%bE  
* @param l ,~K_rNNZ  
* @param i kKE 2~ q  
*/ 6e  |  
private void insertSort(int[] data, int start, int len) { LU?#{dZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'ZT!a]4  
} \Zoo9Wy  
} U@& <5'  
} &o4L;A#&  
} 54uTu2  
UeHS4cW  
堆排序: b@1QE  
'U1r}.+b>  
package org.rut.util.algorithm.support; ]Wd{4(b  
< ]wN/B-8J  
import org.rut.util.algorithm.SortUtil; 7MGc+M(p  
`9K'I-hv<8  
/** L@a-"(TN+  
* @author treeroot C dZ;ZR  
* @since 2006-2-2 y9s5{\H  
* @version 1.0 NLz$jk%=g  
*/ Pv1psKu  
public class HeapSort implements SortUtil.Sort{ KL5rF,DME  
'c &Bmd40  
/* (non-Javadoc) ,nHz~Xi1t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n1sH`C[c  
*/ \re.KB#R  
public void sort(int[] data) { >wMsZ+@m  
MaxHeap h=new MaxHeap(); saRB~[6I  
h.init(data); L~mL9[(,  
for(int i=0;i h.remove(); xVl90ak  
System.arraycopy(h.queue,1,data,0,data.length); "9WP^[  
} yaX,s 4p  
;U7\pc;S  
private static class MaxHeap{ #=O0-si ]P  
A<TJ3Jp]  
void init(int[] data){ xE6y9"}!h  
this.queue=new int[data.length+1]; |23 }~c,  
for(int i=0;i queue[++size]=data; Nc"h8p?  
fixUp(size); gdT^QM:y4$  
} 3_ zI$Z  
} \C<rg|  
TTOd0a  
private int size=0; yTDoS|B+)  
Hb]7>[L  
private int[] queue; M1ayAXO  
8F[j}.8q  
public int get() { Z].>U!7W  
return queue[1]; Me`"@{r|#  
} v5 9>  
" 3^6  
public void remove() { 9J%>2AA  
SortUtil.swap(queue,1,size--); Y]Fq)  -  
fixDown(1); 72{kig9c  
} 4\$Ze0tv  
file://fixdown w}(xs)`num  
private void fixDown(int k) { {:oZ&y)Ac  
int j; u>(Q& 25  
while ((j = k << 1) <= size) { n!N;WL3k  
if (j < size %26amp;%26amp; queue[j] j++; <wSmfg,yF  
if (queue[k]>queue[j]) file://不用交换 .K7A!;  
break; 96PVn  
SortUtil.swap(queue,j,k); n >eIQaV  
k = j; J-QQ!qa0  
} HOUyB's'  
} ! \gRXP}  
private void fixUp(int k) { I{Kc{MXn  
while (k > 1) { T.|0;Eb  
int j = k >> 1; N%_~cR;  
if (queue[j]>queue[k]) +<q^[<pS  
break; , m\0IgZdz  
SortUtil.swap(queue,j,k);  $}F]pa[  
k = j; T,IV)aq  
} P"]+6sm&es  
} JRiuU:=J~`  
}(],*^'u-  
} .o-j  
/9yiMmr5W  
} bF Vd v&  
pts}?   
SortUtil: SKtEEFyIR_  
7]^ }  
package org.rut.util.algorithm; U'lD|R,g  
[@y=% \%R  
import org.rut.util.algorithm.support.BubbleSort; HcVPJuD  
import org.rut.util.algorithm.support.HeapSort; ft*0?2N~  
import org.rut.util.algorithm.support.ImprovedMergeSort; C>u 3n^  
import org.rut.util.algorithm.support.ImprovedQuickSort; $%E9^F  
import org.rut.util.algorithm.support.InsertSort; <s2l*mc  
import org.rut.util.algorithm.support.MergeSort; czb%%:EJs|  
import org.rut.util.algorithm.support.QuickSort; S]o  
import org.rut.util.algorithm.support.SelectionSort; .J@[v  
import org.rut.util.algorithm.support.ShellSort; '|/_='  
X@Bpjg  
/** ?rOb?cu-  
* @author treeroot 3D.S[^s*  
* @since 2006-2-2 p%ZiTrA1&D  
* @version 1.0 /j)VES  
*/ '?>eW 2d  
public class SortUtil { UbibGa= )  
public final static int INSERT = 1; M+E5PZ|_  
public final static int BUBBLE = 2; u7C{>  
public final static int SELECTION = 3; <  t (Pw  
public final static int SHELL = 4; "[?/I3 {E  
public final static int QUICK = 5; h.9Lh ;j  
public final static int IMPROVED_QUICK = 6; F^NR qE  
public final static int MERGE = 7; ^sOm7S{  
public final static int IMPROVED_MERGE = 8; nMa^Eq#  
public final static int HEAP = 9; OT& E)eR  
1b7xw#gLx  
public static void sort(int[] data) { t(Zs*c(  
sort(data, IMPROVED_QUICK); -Wn.@bz6B  
} >YBpB,WND  
private static String[] name={ ._&lG3'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iXm||?Rnx  
}; oGVSy`ku  
uBTT {GGQ  
private static Sort[] impl=new Sort[]{ xs I/DW  
new InsertSort(), Crhi+D  
new BubbleSort(), (K6`nWk2  
new SelectionSort(), Doh|G:P]#  
new ShellSort(), c9 uT`h  
new QuickSort(), G; [A Q:Iy  
new ImprovedQuickSort(), ]k: m2$le  
new MergeSort(), 6)U&XWH0  
new ImprovedMergeSort(), 3NN'E$"3  
new HeapSort() 4LEE /  
}; &&}5>kg>d  
o1WidJ"  
public static String toString(int algorithm){ Kyp0SZp[  
return name[algorithm-1]; w;EXjl;X O  
} dT)KvqX  
unnx#e]  
public static void sort(int[] data, int algorithm) { ?a>7=)%AH  
impl[algorithm-1].sort(data); ' f$L  
} z>33O5U  
ewrWSffe  
public static interface Sort { =_=Z;#`cXk  
public void sort(int[] data); 1 j12Qn@]  
} -+rF]|Wi  
-t 6R!ZI  
public static void swap(int[] data, int i, int j) { UB$`;'|i  
int temp = data; GD[ou.C}k  
data = data[j]; X^D9)kel  
data[j] = temp; s!'A\nVV1$  
} N+M&d3H`  
} `SjD/vNE  
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