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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。 6TkV+\  
插入排序: ]b'" l  
Bb9/nsbE  
package org.rut.util.algorithm.support; #L`'<ge'g*  
P5Is#7udN8  
import org.rut.util.algorithm.SortUtil; ZXH{9hxd  
/** yp l`vJ]X  
* @author treeroot G{]tB w  
* @since 2006-2-2 =s/UF_JN  
* @version 1.0 .h r$<]  
*/ '<-F3  
public class InsertSort implements SortUtil.Sort{ 'gv ~M_  
y1OpZ  
/* (non-Javadoc) Cr>YpWm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9AP."RV  
*/ ![Ll$L r  
public void sort(int[] data) { 9gQ ]!Oq  
int temp; T7# }& >  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pe?=M[u2  
} fb|%)A=  
} /0z#0gNp  
} "rU 2g  
#,B+&SK{  
} V_"UiN"o  
WlW7b.2.  
冒泡排序: Hkzx(yTi  
NnTAKd8  
package org.rut.util.algorithm.support; 88g|(k/  
R?5v //[  
import org.rut.util.algorithm.SortUtil; `/RcE.5n\@  
F~;UD<<"H  
/** ":W$$w<  
* @author treeroot x.kIzI5  
* @since 2006-2-2 d<_#Q7]I4  
* @version 1.0 LVe[N-K  
*/ JxmFUheLt  
public class BubbleSort implements SortUtil.Sort{ 4RL0@)0F  
|] cFsB#G  
/* (non-Javadoc) 0'zX6%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 V3r!y  
*/ lOEB ,/P  
public void sort(int[] data) { *|Bt!  
int temp; n7VQi+i'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z# o;H$  
if(data[j] SortUtil.swap(data,j,j-1); 8Os: SC@Q  
} wn/Y 5   
} 'y%*W:O  
} jeWI<ms  
} N:~CN1  
SL 5QhP  
} `"h[Xb#A`b  
we&D"V  
选择排序: cH6<'W{*  
L['g')g.  
package org.rut.util.algorithm.support; *_@t$W  
'dJ(x  
import org.rut.util.algorithm.SortUtil; 0HPqoen$  
bwyj[:6l  
/** T )!k J;vc  
* @author treeroot uy rS6e0  
* @since 2006-2-2 w^E$R  
* @version 1.0 cxz\1Vphd  
*/  RxO !h8  
public class SelectionSort implements SortUtil.Sort { QE4TvnhK  
)QAS7w#k  
/* 6rBP,\m  
* (non-Javadoc) 1<F6{?,z  
* jg\FD51$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZW%;"5uVm)  
*/ |"aop|  
public void sort(int[] data) { BI6]{ZC"  
int temp; "@(Sw>*o  
for (int i = 0; i < data.length; i++) { 2g HRfTF  
int lowIndex = i; -(JBgM"  
for (int j = data.length - 1; j > i; j--) { :CGh$d] +  
if (data[j] < data[lowIndex]) { Ci$?Hm9n  
lowIndex = j; bsv!z\}  
} a/TeBx#yG  
} 8iUYZF  
SortUtil.swap(data,i,lowIndex); '#NDR:J"  
} 2bAH)=  
} "U|u-ka8B  
:wY(</H  
} v{;^>"5o  
bj ,cU)t0  
Shell排序: -9; XNp  
bBY7^k  
package org.rut.util.algorithm.support; se*!OiOt  
2Dw}o;1'  
import org.rut.util.algorithm.SortUtil; X}ft7;Jpy  
(w1$m8`=  
/** s(pNg?R  
* @author treeroot C`["4  
* @since 2006-2-2 Qb#iT}!p%  
* @version 1.0 vVf%wei^#  
*/ TpRI+*\  
public class ShellSort implements SortUtil.Sort{ MQMc=Z4d  
bkS-[rW  
/* (non-Javadoc) <2t%<<%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M a^}7D /  
*/ 5%]O'h  
public void sort(int[] data) { +wGFJLHJ  
for(int i=data.length/2;i>2;i/=2){ `]4tJJy$  
for(int j=0;j insertSort(data,j,i); WSqo\]  
} }ws(:I^  
} @y8) "m"  
insertSort(data,0,1); =y0h\<[  
} M.``o1b  
K$c?:?wmo  
/** !|~yf3  
* @param data A`nzqe#(1  
* @param j u?SxaGEa  
* @param i =)f5JwZPG  
*/ #Q/xQ`+|.  
private void insertSort(int[] data, int start, int inc) { R c  
int temp; Oid;s!-S6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O #5`mo  
} r#NR3_@9  
} ~(}n d  
} G]T&{3g-.  
+Uxt xl'  
} IHwoG(A~<  
an)Z.x  
快速排序: 1pM>-"a8j  
F7\nG}#s  
package org.rut.util.algorithm.support; }BAe   
C 4K"eX,K  
import org.rut.util.algorithm.SortUtil; VJS1{n=;k  
"0m\y+%8  
/** DHVfb(H5e  
* @author treeroot #:8V<rc^  
* @since 2006-2-2 o3Z<tI8-V  
* @version 1.0 FL[w\&fp  
*/ Z b:S IJ  
public class QuickSort implements SortUtil.Sort{ +pxtar  
x.>&|Ej  
/* (non-Javadoc) UV\&9>@L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [<.dOe7|  
*/ 8gJg7RxL  
public void sort(int[] data) { z-m:l;  
quickSort(data,0,data.length-1); p4@0Dz`Q  
} ;CDa*(e  
private void quickSort(int[] data,int i,int j){ ~ep^S^V+  
int pivotIndex=(i+j)/2; `=E4J2"  
file://swap Erm]uI9`  
SortUtil.swap(data,pivotIndex,j); ZJV;&[$[  
+\RviF[+  
int k=partition(data,i-1,j,data[j]); ql7N\COoq  
SortUtil.swap(data,k,j); t;W'<.m_  
if((k-i)>1) quickSort(data,i,k-1); Cf.(/5X  
if((j-k)>1) quickSort(data,k+1,j); qRCUkw} fs  
YLp#z8 1e  
} }[: i!t.m  
/** )<`/Aaie  
* @param data BHR(B]EI  
* @param i e#^ vA$d  
* @param j +T HBPEq  
* @return WD|pG;Gq  
*/ *~^M_wej  
private int partition(int[] data, int l, int r,int pivot) { wp<f{^ et  
do{ y<m }dW6[\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $.O(K4S  
SortUtil.swap(data,l,r); ?3do-tTp  
} (t"e#b(:  
while(l SortUtil.swap(data,l,r); f<v Z4 IU  
return l; :8Ugz~i  
} ?tkd5kE  
t8uaNvUM}e  
} 6OZ n7:)Y  
S+u@ Q}  
改进后的快速排序: KP CZiu7  
%Vhj<gN  
package org.rut.util.algorithm.support; Thuwme  
9G)fJr  
import org.rut.util.algorithm.SortUtil; .=@CF8ArG  
3-_`x9u*  
/** ,@aF#  
* @author treeroot 9n;6;K#  
* @since 2006-2-2 c.uD%  
* @version 1.0 xd!GRJ<I  
*/ 7o9[cq w  
public class ImprovedQuickSort implements SortUtil.Sort { m 3Do+!M[  
D:XjJMW3r  
private static int MAX_STACK_SIZE=4096; 4K$_d,4`U  
private static int THRESHOLD=10; R2y~+tko?  
/* (non-Javadoc) +m1*ou'K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^\w!D{Y7Q  
*/ ye`-U?7.  
public void sort(int[] data) { 4#ZZwa]y  
int[] stack=new int[MAX_STACK_SIZE]; /e7BW0$1  
6f&qtJQ<A  
int top=-1;  \1?:  
int pivot; ?{r-z3@ N  
int pivotIndex,l,r; Q\aC:68  
),Igu  
stack[++top]=0; AizLzR$OG  
stack[++top]=data.length-1; JxlZ,FF$@  
lz(}N7SLa  
while(top>0){ QoS]QY'bZ  
int j=stack[top--]; ZX0!BS  
int i=stack[top--]; ;& zBNj  
6,(S}x YDZ  
pivotIndex=(i+j)/2; R!2E`^{Wl  
pivot=data[pivotIndex]; K*N8Vpz(  
[q~3$mjQ  
SortUtil.swap(data,pivotIndex,j); _aw49ag;  
oI x!?,1  
file://partition  5 c1{[  
l=i-1; uwu`ms7z 2  
r=j; `}#n#C)  
do{ }h=3[pe}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `FAZAC\  
SortUtil.swap(data,l,r); y>& s;  
} ]Mj N)%hT  
while(l SortUtil.swap(data,l,r); #yOn /  
SortUtil.swap(data,l,j); f&? 8fB8{  
Gy!bPVe  
if((l-i)>THRESHOLD){ h/7_IuD  
stack[++top]=i; a4eE/1  
stack[++top]=l-1; ,ZvlK N  
} _nec6=S6(  
if((j-l)>THRESHOLD){ 9.Yn]O  
stack[++top]=l+1; .>^U mM  
stack[++top]=j; 9Qn*frdY,  
} >(a[b@[K  
1Wz5Iv#Ez  
} 9KMtPBZ  
file://new InsertSort().sort(data); dwVo"_Yr  
insertSort(data); <Gz*2i  
} +{cCKRm  
/** V(OD^GU  
* @param data I G B)  
*/ ]%[.>mR  
private void insertSort(int[] data) { JjQ9AJ?-V  
int temp; (w?W=guHu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zI'c'X1,  
} 92Rm{n   
} [[KIuW~ot  
} teJY*)d  
PB!*&T'!  
} Hf9F:yH  
)`}4rD^b  
归并排序: }c'T]h\S  
/y- 8dgv0a  
package org.rut.util.algorithm.support; / a$B8,  
W+#Zmvo  
import org.rut.util.algorithm.SortUtil; $rH}2  
lfte   
/** >C/O >g  
* @author treeroot K(Ak+&[  
* @since 2006-2-2 Yn8aTg[J  
* @version 1.0 !6eF8T  
*/ KHoDD=O  
public class MergeSort implements SortUtil.Sort{ Sxc p [g;  
pGsu#`t  
/* (non-Javadoc) mh8)yy5\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k Hh0&~ (  
*/ ^Dys#^  
public void sort(int[] data) { n4 J*04K  
int[] temp=new int[data.length]; G/&Wc2k  
mergeSort(data,temp,0,data.length-1); 6Wc.iomx8  
} pt~b=+bBm  
gU@BEn}  
private void mergeSort(int[] data,int[] temp,int l,int r){ N|asr,  
int mid=(l+r)/2; Hw~?%g:<S  
if(l==r) return ; g I4Rku  
mergeSort(data,temp,l,mid); Fd>epvR  
mergeSort(data,temp,mid+1,r); =B"^#n ;  
for(int i=l;i<=r;i++){ rF=\H3`p3  
temp=data; Hq "l`  
} I=&Kn@^  
int i1=l; 9l}G{u9a  
int i2=mid+1; +P;&/z8i*g  
for(int cur=l;cur<=r;cur++){ Z1oUAzpj4  
if(i1==mid+1)  +D|E8sz8  
data[cur]=temp[i2++]; ^(1S`z$  
else if(i2>r) w~WW2 w  
data[cur]=temp[i1++]; (r"2XXR  
else if(temp[i1] data[cur]=temp[i1++]; {'[S.r`  
else fk(h*L|sI  
data[cur]=temp[i2++]; YFs!,fw'  
} w7yz4_:x^  
} %#@5(_'  
.a `ojT  
} >jpk R  
3Hkb)Wu  
改进后的归并排序: _r vO#h  
NSQ#\:3:S  
package org.rut.util.algorithm.support; tQcn%CK  
01vKx)f  
import org.rut.util.algorithm.SortUtil; <6!/B[!O=  
X5c)T}pyv  
/** 3zo:)N \K  
* @author treeroot WXCZ }l  
* @since 2006-2-2 | gP%8nh'C  
* @version 1.0 +%LR1+/%b  
*/ G*rlU  
public class ImprovedMergeSort implements SortUtil.Sort { 1g_Dkv|D  
y!jq!faqt  
private static final int THRESHOLD = 10; MLt'tzgl  
n{xL1A=9  
/* yIma7H@=L  
* (non-Javadoc) CG[04y  
* T&s}~S=m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _#T bO fu  
*/ d2Ox:| <)  
public void sort(int[] data) { Q ;$NDYV1  
int[] temp=new int[data.length]; NnqAr ,  
mergeSort(data,temp,0,data.length-1); &v<Am%!N  
} YH'j"|{  
'*n2<y  
private void mergeSort(int[] data, int[] temp, int l, int r) { )jed@?  
int i, j, k; _W gpk 0  
int mid = (l + r) / 2; Bngvm9k3  
if (l == r) CL<m+dW%*  
return; xc_-1u4a9  
if ((mid - l) >= THRESHOLD) TV*@h2C"i  
mergeSort(data, temp, l, mid); E{}Vi>@V?  
else Qk`LBvg1  
insertSort(data, l, mid - l + 1); 4pZ=CB+j  
if ((r - mid) > THRESHOLD) 2t`d. s=  
mergeSort(data, temp, mid + 1, r); R![4|FR  
else >2dF^cDE-3  
insertSort(data, mid + 1, r - mid); ==Bxv:6  
,_RPy2N  
for (i = l; i <= mid; i++) { :x36Z4:  
temp = data; =;y(b~  
} x aW9Sj0ZM  
for (j = 1; j <= r - mid; j++) { Qs;MEt1  
temp[r - j + 1] = data[j + mid]; QLOcgU^  
} Q'Vejz/  
int a = temp[l]; [ .c'22R6  
int b = temp[r]; >IE`, fe  
for (i = l, j = r, k = l; k <= r; k++) { dmk_xBy s|  
if (a < b) { > PONu]^  
data[k] = temp[i++]; esK0H<]  
a = temp; Ygfv?  
} else { _p\O!y  
data[k] = temp[j--]; #w&N) c>  
b = temp[j]; %S]g8O[}nl  
} wv&#lM(  
} V25u_R`{  
} p _q]Rt  
c<]~q1  
/** S)vNWBO  
* @param data =SLCG.  
* @param l hO0g3^  
* @param i G~KYFNHr  
*/ tW} At  
private void insertSort(int[] data, int start, int len) { Kzrt%DA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L5A?9zum/!  
} Rg~F[j$N  
} m! _*Q  
} DE" Y(;S  
} ?`U=Ps  
j=n<s</V  
堆排序: 9y(491"o  
R&9Q#n-  
package org.rut.util.algorithm.support; !\/J|~XZ  
G2 !J`}  
import org.rut.util.algorithm.SortUtil; eD?f|bif  
&AhkP=Yw  
/** zHk7!|%Y  
* @author treeroot TI}Y U  
* @since 2006-2-2 q@Oe}  
* @version 1.0 *PF=dx<8  
*/ c@/K}  
public class HeapSort implements SortUtil.Sort{ g<PglRr"  
m+9~f_}  
/* (non-Javadoc) s|d"2w6t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vmIt!x  
*/ Rxk0^d:sNi  
public void sort(int[] data) { i;mA|  
MaxHeap h=new MaxHeap(); H?tX^HO:q  
h.init(data); .+$ox-EK8  
for(int i=0;i h.remove(); H/N4t Wk"  
System.arraycopy(h.queue,1,data,0,data.length); 5:|=/X%#qp  
} RG y+W-  
m\e?'-(s  
private static class MaxHeap{ -mY,nMDb  
8KHT"uc'*J  
void init(int[] data){ aYws{Vii  
this.queue=new int[data.length+1]; @t4OpU<'*b  
for(int i=0;i queue[++size]=data; C9L_`[9DO  
fixUp(size); %2^wyVkq:  
} ?OF9{$m3?  
} =U,mzY (  
yrQf PR  
private int size=0; W?X3 :1c9:  
j-TRa,4bN  
private int[] queue; #gSLFM{p  
<Xl/U^B  
public int get() { qUKSo9  
return queue[1]; QZv}\C-c  
} /[+%<5s  
y{Vh?Z<E  
public void remove() { SmVL?wf  
SortUtil.swap(queue,1,size--); B<oBo&uA  
fixDown(1); ,WtJ&S7?  
} `/JuItL-  
file://fixdown +~f=L- >  
private void fixDown(int k) { 2./;i>H[u  
int j; |ZtNCB5{^j  
while ((j = k << 1) <= size) { rceX|i>9n  
if (j < size %26amp;%26amp; queue[j] j++; ciGJtD&P  
if (queue[k]>queue[j]) file://不用交换 Usq.'y/ o  
break; Q?/qQ}nNw  
SortUtil.swap(queue,j,k); jj6yf.r6c  
k = j; ch]{ =61  
} jH?!\F2)+  
} M$UZn  
private void fixUp(int k) { OU'm0Jlk  
while (k > 1) { 5[Uv%A?H#_  
int j = k >> 1; \h5!u1{L  
if (queue[j]>queue[k]) Sjo7NR^#e  
break; 5&TH\2u  
SortUtil.swap(queue,j,k); {fa3"k_ke  
k = j; P$5K[Y4f  
} qB5.of[N!  
} QJ2D C  
':!aFMj^  
} e-*-91D  
~}RfepM  
} y-N]{!  
Fx )BMP  
SortUtil: -Pc6W9$  
tr|)+~x3  
package org.rut.util.algorithm; _)[UartKx  
3@\J#mR  
import org.rut.util.algorithm.support.BubbleSort; #jM-XK  
import org.rut.util.algorithm.support.HeapSort; odWK\e  
import org.rut.util.algorithm.support.ImprovedMergeSort; P7\?WN$p  
import org.rut.util.algorithm.support.ImprovedQuickSort; .FC|~Z1T<F  
import org.rut.util.algorithm.support.InsertSort; \IZY\WU}2  
import org.rut.util.algorithm.support.MergeSort; IR|#]en  
import org.rut.util.algorithm.support.QuickSort; vKBi jmE  
import org.rut.util.algorithm.support.SelectionSort; I &;9  
import org.rut.util.algorithm.support.ShellSort; AK(x;4  
`k`P;(:  
/** Y&-% N  
* @author treeroot Uj)Wbe[)p0  
* @since 2006-2-2 n&3}F?   
* @version 1.0 GQ2/3kt  
*/ ym_p49  
public class SortUtil { tmi)LRF H  
public final static int INSERT = 1; w|c200Is}e  
public final static int BUBBLE = 2; _$i)bJ  
public final static int SELECTION = 3; &yG5w4<  
public final static int SHELL = 4; ^09-SUl^  
public final static int QUICK = 5; Q2[; H!"  
public final static int IMPROVED_QUICK = 6; yt<h!k$ _P  
public final static int MERGE = 7; +`tk LvM  
public final static int IMPROVED_MERGE = 8; 9_fbl:qk;\  
public final static int HEAP = 9; p0h E`!  
bE?X?[K  
public static void sort(int[] data) { =Y Y 7V!  
sort(data, IMPROVED_QUICK); -\n%K  
} %`*On~  
private static String[] name={ us+z8Mz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H*Tzw,f~ v  
}; nF$HWp&gt  
:0Z\-7iK  
private static Sort[] impl=new Sort[]{ ih-J{1  
new InsertSort(), 2'u%  
new BubbleSort(), fZrh_^yH  
new SelectionSort(), LGK@taw^  
new ShellSort(), _!,Ees=b  
new QuickSort(), ^h^.;Iqr=  
new ImprovedQuickSort(), in6*3C4  
new MergeSort(), bEln.)  
new ImprovedMergeSort(), o59b#9  
new HeapSort() KwU;+=_.  
}; SEVB.;  
~LQzt@G4  
public static String toString(int algorithm){ +lxjuEiae  
return name[algorithm-1]; R3%%;`c=  
} *wx95?H0Z  
Jv}&8D  
public static void sort(int[] data, int algorithm) { Ph8@V}80"Y  
impl[algorithm-1].sort(data); 2M=h:::W  
} :C2 @!W z  
;cB3D3fR.  
public static interface Sort { p6!5}dD(  
public void sort(int[] data); t&Q(8Hz  
} No`*->R  
hZlHY9[t?  
public static void swap(int[] data, int i, int j) { e;g7Ek3n  
int temp = data; @S:T8 *~}  
data = data[j]; FbRGfHL[  
data[j] = temp; X9ZHYlr+Q  
} tQas_K5  
} [S1 b\f#  
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