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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。 eh[_~>w  
插入排序: KLX/O1B  
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package org.rut.util.algorithm.support; ~8m=1)A{(  
jLJ1u/l>;  
import org.rut.util.algorithm.SortUtil; Jxqh )l  
/** IG3,XW  
* @author treeroot $x6$*K(F  
* @since 2006-2-2 u`(- -  
* @version 1.0 hd 0 'u  
*/ NvN~@TL28  
public class InsertSort implements SortUtil.Sort{ vzn{h)D  
?GTU=gp Q  
/* (non-Javadoc) B>Wu;a.:L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j|tC@0A  
*/ `nO71mo  
public void sort(int[] data) { sK=0Np=`  
int temp; .ZMW>U>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fw;rbP!  
} r 6eb}z!i  
} JCY~W=;v  
}  8L*GE  
?`[NFqv_]  
} ~}ET?Q7t  
.qA{xbu  
冒泡排序: 1&:@  
P_u|-~|\  
package org.rut.util.algorithm.support; f+.T^es  
 d^(1TNS  
import org.rut.util.algorithm.SortUtil; O@iu aeEW  
M.td^l0  
/** S^Au#1e   
* @author treeroot Tg3!Rq55  
* @since 2006-2-2 }qjCTEs}  
* @version 1.0 ""svDfy$  
*/ iE.-FZc  
public class BubbleSort implements SortUtil.Sort{ )wVIb)`R>Y  
8z5# ]u;  
/* (non-Javadoc) $0^P0RAH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vpp;\  
*/ ^2 ]LV6I  
public void sort(int[] data) { ^h &I H|  
int temp; 8^B;1`#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~ 7)A"t  
if(data[j] SortUtil.swap(data,j,j-1); saD-D2oj  
} *4|Hqa  
} -|Kzo_" v5  
} L_em')  
} h O emt  
?GBkqQ  
} !jqWwi  
U1_&gy @y  
选择排序: [i]r-|_K  
\C 5%\4  
package org.rut.util.algorithm.support; dd|W@Xp -  
xLZd!>C  
import org.rut.util.algorithm.SortUtil; F\ctuaLC  
u-"c0@  
/** -=698h*  
* @author treeroot ]S 7^ITn  
* @since 2006-2-2 0J~Qq]g  
* @version 1.0 FEz>[#eOX  
*/ UofTll)  
public class SelectionSort implements SortUtil.Sort { ^zEE6i  
7~M<cD  
/* eo^/c +FG  
* (non-Javadoc) 6D;^uM2N  
* oPKXZU(c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -RJE6~>'\  
*/ 0@Kkl$O>mb  
public void sort(int[] data) { 8dK0o>|}  
int temp; 0uCT+-  
for (int i = 0; i < data.length; i++) { vw<K}z  
int lowIndex = i; Q+i\8RJ  
for (int j = data.length - 1; j > i; j--) { S'B6jJK2x  
if (data[j] < data[lowIndex]) { xv7"WFb  
lowIndex = j; pUl8{YGS  
} B pLEPuu30  
} TFDm5XJ  
SortUtil.swap(data,i,lowIndex); }%n5nLU`  
} f=J<*h  
} #pdUJ2)yM  
W 4YE~  
} 7t-Lz| $"  
}%{MPqg  
Shell排序: {F|48P;J  
.I$}KE)  
package org.rut.util.algorithm.support; H;WY!X$x  
ezTZnutZ  
import org.rut.util.algorithm.SortUtil; =neL}Fav56  
GJ 'spgz  
/** y|_Eu:  
* @author treeroot OY"6J@[z  
* @since 2006-2-2 p2x [p  
* @version 1.0 VF0dE  
*/ TJ6#P<M  
public class ShellSort implements SortUtil.Sort{ 59Sw+iZj  
NHX>2-b  
/* (non-Javadoc) VanB>|p6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }gf}eH  
*/ cy~oPj]j  
public void sort(int[] data) { j?n+>/sG,  
for(int i=data.length/2;i>2;i/=2){ P"7ow-  
for(int j=0;j insertSort(data,j,i); 2Ohp]G  
} kpob b  
} &~5=K  
insertSort(data,0,1); [6(Iwz?  
} G%TL/Z40  
Ua*&_~7kJ  
/** !D.0 (J  
* @param data j nwQV  
* @param j E@ h y7X  
* @param i l54|Q  
*/ FquFRx  
private void insertSort(int[] data, int start, int inc) { Tvf~P w  
int temp; L*?!Z^k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EY>8O+  
} `{FwTZ=6{  
} INMP"1  
} ,=[*Lo>O  
igDyp0t  
} A~-#@Z  
B94 &elu  
快速排序: dGgP_ S  
F}ukZ DB  
package org.rut.util.algorithm.support; J.M.L$  
[EHrIn  
import org.rut.util.algorithm.SortUtil; evl -V>   
'zgvQMu  
/** 't>r sp+#  
* @author treeroot K}I0o!(#  
* @since 2006-2-2 ]T{E (9  
* @version 1.0 ]"x\=A  
*/ 9]_GNk-D  
public class QuickSort implements SortUtil.Sort{ |#5 e|z5(  
;MTz]c  
/* (non-Javadoc) I>w^2 (y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zJ& b|L  
*/ >mIg@knE  
public void sort(int[] data) { DacJ,in_I{  
quickSort(data,0,data.length-1); )@:l^$x  
} ehO:')XF  
private void quickSort(int[] data,int i,int j){ zsTbdF  
int pivotIndex=(i+j)/2; VfSGCe  
file://swap lQt% Qx  
SortUtil.swap(data,pivotIndex,j); vrrt@y  
^GXEJU 7U  
int k=partition(data,i-1,j,data[j]); [wcA.g*F  
SortUtil.swap(data,k,j); oP$kRfXS!<  
if((k-i)>1) quickSort(data,i,k-1); Z}cIA87U  
if((j-k)>1) quickSort(data,k+1,j); "xwM+AC  
.`LgYW  
} q=Xg*PM,  
/** A1JzW)B  
* @param data _dmL}t-  
* @param i s j9D  
* @param j Da,&+fZI!  
* @return x% XT2+  
*/ ;A^K_w'  
private int partition(int[] data, int l, int r,int pivot) { |"}4*V_*  
do{ DNth4z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I5pp "*u  
SortUtil.swap(data,l,r);  t9*=  
} Lk(S2$)*  
while(l SortUtil.swap(data,l,r); 2bA#D%PHD  
return l; zv%J=N$G  
} ZzL@[g  
F2oJ]th.3  
} <%,'$^'DS  
X!0kK8v  
改进后的快速排序: VJ1*|r,  
/e5\9  
package org.rut.util.algorithm.support; anx&Xj|=.F  
Q#rt<S1zW  
import org.rut.util.algorithm.SortUtil; IrO +5w  
M]ap:  
/** u:4["ViC  
* @author treeroot tyXl}$)y  
* @since 2006-2-2 dF2@q@\.+  
* @version 1.0 t.z$j  
*/ T7GQ^WnA  
public class ImprovedQuickSort implements SortUtil.Sort { ;nf&c;D  
Iu6W=A  
private static int MAX_STACK_SIZE=4096; +L6" vkz  
private static int THRESHOLD=10; rdI]\UH  
/* (non-Javadoc) )<LI%dQ:'l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +2O=s<fp  
*/ MuSaK %  
public void sort(int[] data) { Es:6  
int[] stack=new int[MAX_STACK_SIZE]; z_(eQP])  
!"(u_dFw  
int top=-1; @W [{2d  
int pivot; }vsO^4Sjc  
int pivotIndex,l,r; )H+h ;U  
4I.1D2 1jA  
stack[++top]=0; -h9#G{2W[  
stack[++top]=data.length-1; :1BM=_WwI  
X<K9L7/*  
while(top>0){ ^n71'MW  
int j=stack[top--]; <UAP~RH{  
int i=stack[top--]; " ~n3iNkP  
:C}Hy  
pivotIndex=(i+j)/2; yam}x*O\xn  
pivot=data[pivotIndex]; _> Ln@  
{jG.=}/Dk  
SortUtil.swap(data,pivotIndex,j); /d]~ly @uI  
# `58F.  
file://partition y1Z1=U*!  
l=i-1; GXEcpc08  
r=j; 4@))OD^x  
do{ 4f jC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :tlE`BIp  
SortUtil.swap(data,l,r); Z%;)@0~f  
} )BlJ|M  
while(l SortUtil.swap(data,l,r); zkG>u,B}  
SortUtil.swap(data,l,j); 3*2I$e!Jt  
^cb)f_90  
if((l-i)>THRESHOLD){ n>T:2PQ3  
stack[++top]=i; [edH%S}\  
stack[++top]=l-1; D@5s8xv  
} M4H"].Zm  
if((j-l)>THRESHOLD){ c'~[!,[b<  
stack[++top]=l+1; Ut':$l=  
stack[++top]=j; :Fo4O'UC  
} Uir*%*4:  
0k.v0a7%  
} aYBTrOdz  
file://new InsertSort().sort(data); w #<^RKk  
insertSort(data); Rd vn)K  
} 1 Xa+%n9  
/** wVQdUtmk  
* @param data CnQg*+  
*/ xi.IRAZX  
private void insertSort(int[] data) { ?to1rFrU  
int temp; W7W3DBKtSm  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5R"2Wd  
} l-MxLcz  
} bu&;-Ynb  
} $ {@q?iol  
km}MqBQl  
} fK);!Hh  
>.LgsMRIKi  
归并排序: RCQAtBd  
 /+N|X  
package org.rut.util.algorithm.support; >.n;mk  
l JlZHO  
import org.rut.util.algorithm.SortUtil; &h\CS8nT%  
Vl4Z_viNH  
/** !+=Zjm4L  
* @author treeroot KZW'O b>[  
* @since 2006-2-2 $(XgKq&xWZ  
* @version 1.0 L2d:.&5  
*/ @$EjD3Z-  
public class MergeSort implements SortUtil.Sort{ yqYhe-"  
DQMPAj.  
/* (non-Javadoc) *3P3M}3~\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NA=#> f+U%  
*/ 7Zo&+  
public void sort(int[] data) { PE|PwqX  
int[] temp=new int[data.length]; =g >.X9lr  
mergeSort(data,temp,0,data.length-1); Pu-p7:99;'  
} ]L$4P y  
Hw y5G ;  
private void mergeSort(int[] data,int[] temp,int l,int r){ CJm.K  
int mid=(l+r)/2; prwC>LE  
if(l==r) return ; keaj3#O  
mergeSort(data,temp,l,mid); ia_Z\q  
mergeSort(data,temp,mid+1,r); p %L1uwLG  
for(int i=l;i<=r;i++){ .hc|t-7f  
temp=data; HLM;EZ  
} _/ct=  
int i1=l; pFEZDf}:  
int i2=mid+1; )tScc*=8  
for(int cur=l;cur<=r;cur++){ ' *}^@[&  
if(i1==mid+1) -.^3;-[  
data[cur]=temp[i2++]; ):^ '/e  
else if(i2>r) Ny.*G@&  
data[cur]=temp[i1++]; _yNT=#/  
else if(temp[i1] data[cur]=temp[i1++]; fEB195#@9  
else l 4!kxXf-<  
data[cur]=temp[i2++]; [7'#~[a~  
} @81-kdTx  
} |PI)A`  
{x7=;-  
} qw5&Y$((  
E2kW=6VO>|  
改进后的归并排序: ;*W=c   
TeKC} NW  
package org.rut.util.algorithm.support; & { DR 6  
1;aF5~&  
import org.rut.util.algorithm.SortUtil; ;i.I&*t  
l<W*/}3  
/** lxo.,n)  
* @author treeroot .\Ul!&y  
* @since 2006-2-2 c6t2Q6zV  
* @version 1.0 >6OCKl  
*/ MF&3e#mdB  
public class ImprovedMergeSort implements SortUtil.Sort { >_-!zjO8u  
``+c`F?5  
private static final int THRESHOLD = 10;  NvUu.  
ud yAP>  
/* : #3OcD4  
* (non-Javadoc) ~B<97x(X  
* 09G9nu;&{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XO0>t{G  
*/ c[&d @  
public void sort(int[] data) { V_Xy2<V  
int[] temp=new int[data.length]; oDz*~{BHg  
mergeSort(data,temp,0,data.length-1); =x=1uXQv5  
} nrF%wH/5  
T_uNF8Bh  
private void mergeSort(int[] data, int[] temp, int l, int r) { ri#,ec|J  
int i, j, k; a_Z.J3  
int mid = (l + r) / 2; tvTWZ`  
if (l == r) y*}AX%8`e~  
return; O|? Z~  
if ((mid - l) >= THRESHOLD) ?E%U|(S)=L  
mergeSort(data, temp, l, mid); &aY/eD  
else 5woIGO3X  
insertSort(data, l, mid - l + 1); ?hxK/%)  
if ((r - mid) > THRESHOLD) TG4\%S$w  
mergeSort(data, temp, mid + 1, r);   YfTd  
else ~^^!"-  
insertSort(data, mid + 1, r - mid); Rl y jOf{0  
l?})_1v,R  
for (i = l; i <= mid; i++) { |.y>[+Qb*  
temp = data; `oB'(  
} b;Hm\aK  
for (j = 1; j <= r - mid; j++) { :/>7$)+  
temp[r - j + 1] = data[j + mid]; >BJ2v=R A  
} |)28=Z|Z  
int a = temp[l]; }Vs~RJM)}  
int b = temp[r]; \k|_&hG  
for (i = l, j = r, k = l; k <= r; k++) {  yQ<6p3  
if (a < b) { Bh\ [ CY  
data[k] = temp[i++]; g!p+rq_f  
a = temp; sVE>=0TVP  
} else { Tq9,c#}&  
data[k] = temp[j--]; #x, ]D  
b = temp[j]; 2ZU@>W  
} _u#/u2<  
} Qe7" Z  
} <dq,y>  
$/4Wod*l  
/** h |s*i  
* @param data R'vdk<  
* @param l 0\V\qAk  
* @param i DfAiL(  
*/ oN.Mra]D  
private void insertSort(int[] data, int start, int len) { %2^['8t#NH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Bx\#`Y  
} }W- K  
} C HQ {+?#  
} \7|s$ XQ\  
} 7'-)/Pk  
Iu)L3_+  
堆排序: 9c"0~7v  
c80 }1  
package org.rut.util.algorithm.support; z zulVj*  
EZ:I$X  
import org.rut.util.algorithm.SortUtil; $ 1ak I  
zb@L)%  
/** RH<@c^ S  
* @author treeroot j)6@q@P/  
* @since 2006-2-2 6b-  
* @version 1.0 ^?H\*N4  
*/ 9`ri J4zl  
public class HeapSort implements SortUtil.Sort{ sL!;hKK  
N b#H@zm  
/* (non-Javadoc) {Uik|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,$hQ(yF  
*/ P Xyyyir{  
public void sort(int[] data) { bl(BA}<  
MaxHeap h=new MaxHeap(); hXV4$Dai  
h.init(data); /V#MLPA  
for(int i=0;i h.remove(); 5A0K V7N5  
System.arraycopy(h.queue,1,data,0,data.length); nG&w0de<>  
} T+ &x{+gZ  
h1Ke$#$6  
private static class MaxHeap{ I T*fjUY&  
N&R '$w  
void init(int[] data){ U92B+up-  
this.queue=new int[data.length+1]; f9h:"Dnzin  
for(int i=0;i queue[++size]=data; OlD7-c2L]  
fixUp(size); Ktg&G<%J0  
} 5*G8W\ $  
} Y;a6:>D%cT  
J,dG4.ht  
private int size=0; }M"-5K}  
>i><s>=I`  
private int[] queue; ANA2S*r  
J8qu]{0I"  
public int get() { >m)2ox_B  
return queue[1]; Y-}hNZn"{  
} kw*Cr/'*  
'^P*F9  
public void remove() { R7\{w(`K  
SortUtil.swap(queue,1,size--); :ofE8]  
fixDown(1); ?X8K$g  
} lB5[#z  
file://fixdown %xH>0  
private void fixDown(int k) { +1JZB* W  
int j; =$:4v`W0(  
while ((j = k << 1) <= size) { Y\\3g_YBF  
if (j < size %26amp;%26amp; queue[j] j++; b&U5VA0=1  
if (queue[k]>queue[j]) file://不用交换 [*mCa:^  
break; rsIt~w  
SortUtil.swap(queue,j,k); "K4X:|Om"  
k = j; S2{ ?W  
} BDB zc5Q(  
} K8Kz  
private void fixUp(int k) { 2i4Dal  
while (k > 1) { K'{wncumQ  
int j = k >> 1; MJ*oeI!.=  
if (queue[j]>queue[k]) .@x"JI> ;  
break; 'vf,T4uQ"  
SortUtil.swap(queue,j,k); ,M+h9_&0?  
k = j; S7\|/h:4  
} nU">> 1!U  
} d-A%ZAkE]  
AW{/k'%xw  
} `Tm8TZd66  
tyG nG0GK  
} ^{6UAT~!R  
l*m]2"n]  
SortUtil: ~gzpX,{ n  
hj#+8=  
package org.rut.util.algorithm; H)?" 8 s  
]0/~6f  
import org.rut.util.algorithm.support.BubbleSort; +Qb2LR  
import org.rut.util.algorithm.support.HeapSort; \fQgiX  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1W6n[Xg  
import org.rut.util.algorithm.support.ImprovedQuickSort; &H p\("  
import org.rut.util.algorithm.support.InsertSort; 7W>}7  
import org.rut.util.algorithm.support.MergeSort; a3E*%G  
import org.rut.util.algorithm.support.QuickSort; J&] XLr.j  
import org.rut.util.algorithm.support.SelectionSort; ['9OGV\  
import org.rut.util.algorithm.support.ShellSort; iz,q8}/(  
ZRVF{D??"%  
/** -*]9Ma<wa  
* @author treeroot se*pkgWbz  
* @since 2006-2-2 'Rar>oU  
* @version 1.0 H'0J1\ h  
*/ 01SFOPuR%(  
public class SortUtil { ;j Y'z5PH5  
public final static int INSERT = 1; DrVbx  
public final static int BUBBLE = 2; F4aJr%!\6S  
public final static int SELECTION = 3; Zj /H3,7  
public final static int SHELL = 4; y(p:)Iv  
public final static int QUICK = 5; "b+3 &i|  
public final static int IMPROVED_QUICK = 6; ud~VQXZo  
public final static int MERGE = 7; BYA=M*f  
public final static int IMPROVED_MERGE = 8; ;R- z3C  
public final static int HEAP = 9; 1<Ztk;$A  
[]]LyWk  
public static void sort(int[] data) { hzf}_1  
sort(data, IMPROVED_QUICK); , K"2tb  
} c9_4 ohB  
private static String[] name={ d+$[EDix  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ph$&f0A6Xc  
}; oVj A$|  
tIp\MXkTQ&  
private static Sort[] impl=new Sort[]{ h 19.b:JT  
new InsertSort(), ",,qFM!  
new BubbleSort(), B#/~U`t*  
new SelectionSort(), &hM,b!R|  
new ShellSort(), V'| g  
new QuickSort(), V[2<ha[n>  
new ImprovedQuickSort(), 14)kKWG  
new MergeSort(), <pa];k(IQL  
new ImprovedMergeSort(), *^$N $t/2  
new HeapSort() e715)_HD  
}; 66y,{t  
f~(^|~ZT  
public static String toString(int algorithm){ !nD[hI8P  
return name[algorithm-1]; TY{?4  
} $@ #G+QQ_  
u[% J#S  
public static void sort(int[] data, int algorithm) { ?[|4QzR  
impl[algorithm-1].sort(data); MrygEC 5  
} p44uozbK  
c=c.p i"s  
public static interface Sort { u+i/CE#w  
public void sort(int[] data); #| e5  
} K|' ]Hje\  
qm&53  
public static void swap(int[] data, int i, int j) { $EHn ;~w T  
int temp = data; Ns7l-mb  
data = data[j]; J,2v~Dq  
data[j] = temp; ',-X#u  
} (fjXp75  
} :\HN?_?{4  
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