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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。 q6Rr.A  
插入排序: :y*NM,s  
1"Z@Q`}  
package org.rut.util.algorithm.support; }En  
|-sPLU&s%  
import org.rut.util.algorithm.SortUtil; :NJ_n6E  
/** :B3[:MpL}  
* @author treeroot Q!- 0xlx  
* @since 2006-2-2 lC:k7<0Ji  
* @version 1.0 A.<H>=Z# O  
*/ `&\Q +W  
public class InsertSort implements SortUtil.Sort{ \(226^|j  
JB!:JML  
/* (non-Javadoc) #^m0aB7r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R_M?dEtE>  
*/ SJD@&m%?[  
public void sort(int[] data) { 4tL<q_  
int temp; U*90m~)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]7-&V-Ct*  
} HhO".GA  
} :0Z^uuk`gq  
} oFjIA!  
;iDPn2?6?x  
} DN4$Jva  
fXrXV~'8  
冒泡排序: [MuEoWrq(}  
/mo(_  
package org.rut.util.algorithm.support; 8XbA'% o  
rG,5[/l  
import org.rut.util.algorithm.SortUtil; + QQS={  
]Q[p@gLd  
/** [+O"<Ua  
* @author treeroot Y*mbjyt[?X  
* @since 2006-2-2 THmb6^  
* @version 1.0 SG6sw]x  
*/ Bl=tYp|a  
public class BubbleSort implements SortUtil.Sort{ >0Q|nCx  
N0#JOu}~  
/* (non-Javadoc) (O0Urm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{5A4|_7  
*/  i2~  
public void sort(int[] data) { CI3XzH\IX*  
int temp; B"%{i-v>**  
for(int i=0;i for(int j=data.length-1;j>i;j--){ re> rr4@  
if(data[j] SortUtil.swap(data,j,j-1); Jx'i2&hGN  
} /x3/Ubmz~x  
} `xrmT t X  
} L(X6-M:  
} m3o,@=b  
`^lYw:xA  
} ^MBm==heL  
>E*$ E  
选择排序: Ivb 4P`{  
*L!!]Q2c  
package org.rut.util.algorithm.support; TX#m&vh  
0OGCilOb*  
import org.rut.util.algorithm.SortUtil; ;NNe!}C  
Wb S4pdA  
/** (Vo>e =q  
* @author treeroot u,3#M ~  
* @since 2006-2-2 MxBTX4ES  
* @version 1.0 4lZ$;:Jg  
*/ ~F1:N>>_Cf  
public class SelectionSort implements SortUtil.Sort { ,^S@EDq  
[TNj;o5J  
/* |ae97 5  
* (non-Javadoc) D-,L&R!`  
* >MPr=W%E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LdB($4,  
*/ \e`~i@) ~Z  
public void sort(int[] data) { o=nsy]'&  
int temp; ^FnfJ:  
for (int i = 0; i < data.length; i++) { f-r] |k  
int lowIndex = i; 7w3CXY  
for (int j = data.length - 1; j > i; j--) { ^Idle*+  
if (data[j] < data[lowIndex]) { 0q&'(-{s1  
lowIndex = j; UUMtyf  
} @u1zB:  
} 5aa<qtUjH  
SortUtil.swap(data,i,lowIndex); o-o'z'9  
}  \lSU  
} =~+DUMBT  
Pzb|t+"$  
} z~A]9|/61v  
sdS^e`S  
Shell排序: oHs2L-G  
cCR+D.F  
package org.rut.util.algorithm.support; N:9>dpP}O  
D$JHs4  
import org.rut.util.algorithm.SortUtil; hI(SOsKs  
57 #6yXQ  
/** I<A6Z&*un  
* @author treeroot $U/YR&vcw  
* @since 2006-2-2 O2"gj"D  
* @version 1.0 It75R}B   
*/ oP4GEr  
public class ShellSort implements SortUtil.Sort{ %E_b'[8  
j+HHQd7Y  
/* (non-Javadoc) P bQk<"J1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _@R0x#p5M  
*/ >,DbNmi  
public void sort(int[] data) { mRZ :ie  
for(int i=data.length/2;i>2;i/=2){ ]Ta N{"  
for(int j=0;j insertSort(data,j,i); b?eu jxqg  
} &Ni`e<mP  
}  ;vb8G$  
insertSort(data,0,1); )TmHhNo  
} m:hY`[ f6  
uWrQ&}@  
/** }E_#k]#*  
* @param data kEd@oC  
* @param j <`0h|m'U  
* @param i m%PC8bf`S  
*/ -Qn=|2Mm?  
private void insertSort(int[] data, int start, int inc) { P#:?ok  
int temp; q5 L51KP2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m5Tr-w$QY  
} $mCarFV-T  
} xB !6_VlB  
} f$'2}'.!$  
vO;I(^Q  
} 6b!F1  
!*`-iQo&  
快速排序: 7G)H.L)$m"  
AL5Vu$V~n}  
package org.rut.util.algorithm.support; \qUKP"dr  
=rR~`  
import org.rut.util.algorithm.SortUtil; boo }u  
b^[F""!e  
/** oc^Br~ Th  
* @author treeroot @2*]"/)*0  
* @since 2006-2-2 4hw@yTUo  
* @version 1.0 A?G^\I~v  
*/ FaBqj1O1  
public class QuickSort implements SortUtil.Sort{ U8(Nk\"X\  
wd/< 8>2X  
/* (non-Javadoc) ",)Qc!^P$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) al`3Lu0  
*/ .] `f,^v<c  
public void sort(int[] data) { xW[ -n  
quickSort(data,0,data.length-1); B:Z_9,gj-N  
} G"T',~  
private void quickSort(int[] data,int i,int j){ 4H+Ked&Oq  
int pivotIndex=(i+j)/2; (|d34DOJ  
file://swap &gI~LP  
SortUtil.swap(data,pivotIndex,j); 3z ]+uv+2J  
\(">K  
int k=partition(data,i-1,j,data[j]); !d&C>7nb  
SortUtil.swap(data,k,j); +1~Z#^{&  
if((k-i)>1) quickSort(data,i,k-1); mYc.x  
if((j-k)>1) quickSort(data,k+1,j); DD44"w_9  
%0Y=WYUH>  
} f7I{WfZ\P  
/** .%zy`n  
* @param data 3 v")J*t  
* @param i 6DZ),F,M  
* @param j Va$Pi19 O  
* @return ]qB:PtX  
*/ pZyQY+O  
private int partition(int[] data, int l, int r,int pivot) { {Q<$Uo6V  
do{ rDdzxrKg{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j|tC@0A  
SortUtil.swap(data,l,r); ]m#5`zGK1|  
} JH7Ad (:  
while(l SortUtil.swap(data,l,r); }KD;0t4  
return l; LB/C-n.`  
} N0>0z]4;q  
kcDyuM`  
} t!K*pM  
V]S1X^  
改进后的快速排序: O@iu aeEW  
)+H[kiN  
package org.rut.util.algorithm.support; +wW@'X  
v_<2H' *Q  
import org.rut.util.algorithm.SortUtil; R4Rb73o  
0hZ1rqq8C  
/** _owjTo}  
* @author treeroot 5( _6+'0  
* @since 2006-2-2 iBudmT8  
* @version 1.0 saD-D2oj  
*/ d1joVUYE  
public class ImprovedQuickSort implements SortUtil.Sort { K) Zlc0e  
79=45'8  
private static int MAX_STACK_SIZE=4096;  _ q(Q  
private static int THRESHOLD=10; N -w(e  
/* (non-Javadoc) @/UfD ye  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I^Z8PEc+  
*/ ftBq^tC  
public void sort(int[] data) { @DC)]C2  
int[] stack=new int[MAX_STACK_SIZE]; iq*A("pU  
fa.0I~  
int top=-1; /XS&d%y  
int pivot; CVXytS?@x  
int pivotIndex,l,r; 0uCT+-  
`P@- %T  
stack[++top]=0; ?*r!{3T ,u  
stack[++top]=data.length-1; Ri>?KrQF%  
H(Ms^8Vs~:  
while(top>0){ V,%L ~dI  
int j=stack[top--]; PNSMcakD  
int i=stack[top--]; N_75-S7Cm  
[&Hkn5yq  
pivotIndex=(i+j)/2; N]5m(@h  
pivot=data[pivotIndex]; _x1EZ&dh  
#~qAHJ<  
SortUtil.swap(data,pivotIndex,j); H^1gy=kdj  
zGc(Ef5`M6  
file://partition q;AT>" =)  
l=i-1; 5+X_4lEJK(  
r=j; ;+pOP |P=  
do{ 6@4n'w{"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %IBL0NQT  
SortUtil.swap(data,l,r); /-0' Qa+*  
} u@%|k c`  
while(l SortUtil.swap(data,l,r); U/qE4u1J6M  
SortUtil.swap(data,l,j); |sgXh9%x<  
-T/W:-M(  
if((l-i)>THRESHOLD){ 9>,Qgp,w  
stack[++top]=i; 4}KU>9YRA  
stack[++top]=l-1; ?)3jqQ.  
} fMK#x\.4  
if((j-l)>THRESHOLD){ + C7T]&5s  
stack[++top]=l+1; Tvf~P w  
stack[++top]=j; Uedvc5><t  
} `{FwTZ=6{  
i RmQ5ezk  
} igDyp0t  
file://new InsertSort().sort(data); <xS=#  
insertSort(data); dGgP_ S  
} zREJ#r  
/** [EHrIn  
* @param data Fm j=  
*/ sM\&. <B  
private void insertSort(int[] data) { #A <1aQ  
int temp; heD,& OX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "2HY5 AE  
} 7S2C/f  
} <d$A)S};W  
} WBppKj_M  
& QZVq"  
} ehO:')XF  
M$CVQ>op:  
归并排序: lQt% Qx  
~-Oa8ww  
package org.rut.util.algorithm.support; Qd8b-hg  
9d[qh kPu)  
import org.rut.util.algorithm.SortUtil; O<,r>b,  
P%o44|[][  
/** 4'At.<]jL  
* @author treeroot z<a2cQ?XQ  
* @since 2006-2-2 shi Hy*(v  
* @version 1.0 B7 "Fp  
*/ k0&lu B%  
public class MergeSort implements SortUtil.Sort{ >riq98Us/  
U'3Fou}  
/* (non-Javadoc) _p4}<pG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <NQyP{p  
*/ ujx-jIhT_  
public void sort(int[] data) { <%,'$^'DS  
int[] temp=new int[data.length]; 3YTIH2z 5  
mergeSort(data,temp,0,data.length-1); /e5\9  
} Tt6{WDscZ  
ic~Z_?p  
private void mergeSort(int[] data,int[] temp,int l,int r){ Lpm?# g uR  
int mid=(l+r)/2; OJ[rj`wrW^  
if(l==r) return ; <:cpz* G4  
mergeSort(data,temp,l,mid); eti9nPjG  
mergeSort(data,temp,mid+1,r); rdI]\UH  
for(int i=l;i<=r;i++){ ?Leyz  
temp=data; MuSaK %  
} ^uBwj }6  
int i1=l; 1jOKcm'#  
int i2=mid+1; FU]4oKx  
for(int cur=l;cur<=r;cur++){ "8t\MKt(  
if(i1==mid+1) /W9 &Ke  
data[cur]=temp[i2++]; .v7`$(T  
else if(i2>r) :1BM=_WwI  
data[cur]=temp[i1++]; ,|x\MHd?t_  
else if(temp[i1] data[cur]=temp[i1++]; <[8@5?&&  
else  tJ1-DoU  
data[cur]=temp[i2++]; xvO 3BU~2  
} z.59]\;U>  
} /d]~ly @uI  
u[mY!(>nQ  
} GXEcpc08  
%LcH>sV  
改进后的归并排序: :tlE`BIp  
(. H ]|  
package org.rut.util.algorithm.support; ;r@!a!NLB  
h+xA?[ c=  
import org.rut.util.algorithm.SortUtil; %ph"PR/t?  
/.2u.G  
/** Dpj-{q7C  
* @author treeroot RK;;b~  
* @since 2006-2-2 n\* JaY  
* @version 1.0 _]Ey Ea  
*/ )DRkS,I  
public class ImprovedMergeSort implements SortUtil.Sort { R%W@~o\p]  
,M{Q}:$+4  
private static final int THRESHOLD = 10; vh{9'vd3el  
p70,\&@3  
/* Dx0O'uwR  
* (non-Javadoc) RCCv>o  
* $ {@q?iol  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BP:(IP!&  
*/ qdO[d|d  
public void sort(int[] data) { Q-jf8A]  
int[] temp=new int[data.length]; fIH#  
mergeSort(data,temp,0,data.length-1); &h\CS8nT%  
} ?^Pq/VtZ  
Q;Q%SI`yT  
private void mergeSort(int[] data, int[] temp, int l, int r) { s`r-v/3l  
int i, j, k; =9fEv,Jk  
int mid = (l + r) / 2; W?=$V>)  
if (l == r) /M]eZ~QKD  
return; =hPG_4#  
if ((mid - l) >= THRESHOLD) Y\Fuj)  
mergeSort(data, temp, l, mid); :Olj  
else [#H8=  
insertSort(data, l, mid - l + 1); =$:4v`W0(  
if ((r - mid) > THRESHOLD) 18[?dV  
mergeSort(data, temp, mid + 1, r); d\1:1ucV  
else i9#`F.7F  
insertSort(data, mid + 1, r - mid); 0ER6cTo-t  
-r6(=A  
for (i = l; i <= mid; i++) { ;X9MA=b  
temp = data; I&Eg-96@  
} erAZG)  
for (j = 1; j <= r - mid; j++) { } (GQDJp  
temp[r - j + 1] = data[j + mid]; ;GSfN  
} {ra Esb-X  
int a = temp[l]; H|(*$!~e  
int b = temp[r]; I'6 ed`|  
for (i = l, j = r, k = l; k <= r; k++) { Eo25ir%  
if (a < b) { #!<+:y'S?  
data[k] = temp[i++]; -Z\UYt  
a = temp; j*3sjOoC  
} else { V)@nRJg  
data[k] = temp[j--]; +Fkx")  
b = temp[j]; ZQ-z2s9U  
} `rOe5Zp$  
} `OF ;>u*:  
} $F /p8AraK  
SqT"/e]b'  
/** 'Rar>oU  
* @param data EC\rh](d 1  
* @param l |L~gNC  
* @param i ={&TeMMA  
*/ n(F<  
private void insertSort(int[] data, int start, int len) { y(p:)Iv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ogh2kht  
} ]cO$E=W  
} A~~| X  
} @v:ILby4-  
} {(zL"g46  
J4R  
堆排序: A_4\$NZ^  
Wf&G9Be?8  
package org.rut.util.algorithm.support; 1>O0Iu  
h 19.b:JT  
import org.rut.util.algorithm.SortUtil; G%x,t -  
"N[gMp6U  
/** TJGKQyG$L  
* @author treeroot \Jj'60L^  
* @since 2006-2-2 *dn-,Q%`  
* @version 1.0 ,r)d#8  
*/ P$#}-15?|_  
public class HeapSort implements SortUtil.Sort{ _ER cmP  
(UiH3Q9C]%  
/* (non-Javadoc) )~o`QM+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@V/37!  
*/ MrygEC 5  
public void sort(int[] data) { l#(g&x6J  
MaxHeap h=new MaxHeap(); ~TmHnAz  
h.init(data); u/{_0-+P  
for(int i=0;i h.remove(); h"%,eW|^  
System.arraycopy(h.queue,1,data,0,data.length); }v|[h[cZ  
} Jv$2wH  
uC$4TnoQx.  
private static class MaxHeap{ XzRWY\x  
j?` D\LZhf  
void init(int[] data){ &cv /q$W4  
this.queue=new int[data.length+1]; IU"!oM^  
for(int i=0;i queue[++size]=data; <P)%Ms  
fixUp(size); LAjw!QB  
} tYxlM!  
} B 0fo[Ev  
Y&Nv>o_}5  
private int size=0; hFF&(t2{^  
dodz|5o%  
private int[] queue; kJ:5msKwC  
!c;p4B)  
public int get() { K^p"Z$$  
return queue[1]; 6Yi,%#  
} /?<9,7#i  
|@4h z9~3  
public void remove() { Czl 8Q oH  
SortUtil.swap(queue,1,size--); I,q~*d  
fixDown(1); #B{F{,vlu,  
} <L[)P{jn?p  
file://fixdown ~1z8G>R  
private void fixDown(int k) { 8XXTN@&,  
int j; A7}|VV  
while ((j = k << 1) <= size) { T%b^|="@  
if (j < size %26amp;%26amp; queue[j] j++; Y+PxV*"a  
if (queue[k]>queue[j]) file://不用交换 %JU23c*  
break; |6G5  ?|  
SortUtil.swap(queue,j,k); 8&AorYw[  
k = j; iw6M3g#  
} W;*vcbP  
} &?6 ~v  
private void fixUp(int k) { ojI"<Q~g  
while (k > 1) { Nr7.BDA  
int j = k >> 1; MjosA R  
if (queue[j]>queue[k]) w4/)r-Z4I  
break; ZI*A0_;L  
SortUtil.swap(queue,j,k); =<tEc+!T3  
k = j; (9QRg;   
}  [?(W7  
} \YyU5f7';  
@)Y7GM+^  
} ]nGA1S{  
YtKX\q^.  
} aYX'&k `  
Y'":OW#oN  
SortUtil: `t"Kq+  
6:X\vw  
package org.rut.util.algorithm; S5p\J!k\B  
jYx(  
import org.rut.util.algorithm.support.BubbleSort; %5w)}|fw  
import org.rut.util.algorithm.support.HeapSort; |W[rywxx  
import org.rut.util.algorithm.support.ImprovedMergeSort; BAed [  
import org.rut.util.algorithm.support.ImprovedQuickSort; FC .-u"V  
import org.rut.util.algorithm.support.InsertSort;  X0L{#U  
import org.rut.util.algorithm.support.MergeSort; ?XrTZ{5'  
import org.rut.util.algorithm.support.QuickSort; 'GT`% ck  
import org.rut.util.algorithm.support.SelectionSort; ;\0RXirk  
import org.rut.util.algorithm.support.ShellSort; uU"s50m  
JB}h }nb  
/** }z:=b8}  
* @author treeroot 09i[2n;O  
* @since 2006-2-2 {[iQRYD0|  
* @version 1.0 "Vy\- ^  
*/ #J9XcD{1  
public class SortUtil { At:C4>HE@  
public final static int INSERT = 1; !9Ni[8&Fg0  
public final static int BUBBLE = 2; "aH]4DO  
public final static int SELECTION = 3; )^3655mb  
public final static int SHELL = 4; [X\2U4  
public final static int QUICK = 5; fQ) ;+  
public final static int IMPROVED_QUICK = 6; g DIB'Y  
public final static int MERGE = 7; .v!e=i}.  
public final static int IMPROVED_MERGE = 8; epe}^Pl  
public final static int HEAP = 9; pm|]GkM  
QJ'C?hn  
public static void sort(int[] data) { Nzt1JHRS  
sort(data, IMPROVED_QUICK); }x-8@9S~z  
} "=O)2}  
private static String[] name={ ^4i3#}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \`&fr+x  
}; ru Lcu]  
jeNEC&J  
private static Sort[] impl=new Sort[]{ Gd 9B  
new InsertSort(),  }2"k:-g  
new BubbleSort(), S6I8zk)Z4  
new SelectionSort(), n_Dhq(.  
new ShellSort(), Nq3P?I(<  
new QuickSort(), %hh8\5l.:  
new ImprovedQuickSort(), 0SYkDI  
new MergeSort(), Fh;(1X75I  
new ImprovedMergeSort(), .`9KB3  
new HeapSort() S{06bLXU"  
}; n9yxZu   
^} #!?" Y  
public static String toString(int algorithm){ J.(_c ' r  
return name[algorithm-1]; ml2HA4X&$Y  
} ~heF0C_  
!h~\YE)  
public static void sort(int[] data, int algorithm) { {I ,'  
impl[algorithm-1].sort(data); I._=q  
} X"sN~Q.0  
WF7RMQ51j  
public static interface Sort { ]Ea6Z  
public void sort(int[] data); <Lt$qV-#  
} xUUp ?]9y  
hb{(r@[WHv  
public static void swap(int[] data, int i, int j) { g& Rk}/F  
int temp = data; YDwns  
data = data[j]; ,??|R` S  
data[j] = temp; @\a- =  
} |qD<h  
} * gnL0\*  
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