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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。 [E&"9%K  
插入排序: z8MpE  
085 ^!AZ  
package org.rut.util.algorithm.support; m~\m"zJ4  
# v/aI*Rl  
import org.rut.util.algorithm.SortUtil; b9!J}hto,  
/** #p^pvdvh3  
* @author treeroot U*#E aL  
* @since 2006-2-2 :r[-7 [/  
* @version 1.0 '"NdT7*+  
*/ eXtF[0f  
public class InsertSort implements SortUtil.Sort{ ~s^6Q#Z9|  
iS^^Z ZyR  
/* (non-Javadoc) (5\d[||9g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 bx^Pt)  
*/ dXr !_)i  
public void sort(int[] data) { $[9V'K  
int temp; ` G/QJH{I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NhaeAD $e  
} % w/1Uo24  
} Y K62#;  
} kKTED1MW&W  
r4qV}-E  
} ^*T{-U'  
B=qRZA!DQ?  
冒泡排序: D_`)T;<Sp  
w+ )GM  
package org.rut.util.algorithm.support; [}B{e=`!  
{hp@j#  
import org.rut.util.algorithm.SortUtil; S+=@d\S}"  
'Rf#1ls#  
/** T"jDq1C/,E  
* @author treeroot qv >(  
* @since 2006-2-2 !!Gi.VL  
* @version 1.0 v nT  
*/ G7#~=W 2M  
public class BubbleSort implements SortUtil.Sort{ :=fHPT  
2tTV5,(1  
/* (non-Javadoc) "g&l~N1$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S| ?--vai_  
*/ uaMm iR  
public void sort(int[] data) { RAJ |#I1  
int temp; Kwmo)|7uPU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;bu;t#  
if(data[j] SortUtil.swap(data,j,j-1); +(hwe jyC  
} sjbC~Te--  
} jF2GHyB  
} #pxet  
} )qQg n]  
krT!AfeV  
} jT_Tx\k  
)HiTYV)]'  
选择排序: v8M#%QoA  
YV+dUvz  
package org.rut.util.algorithm.support; oEf^o*5(  
T_ #oMXZ/  
import org.rut.util.algorithm.SortUtil; {@`Uf;hPAX  
iV$75Atk  
/** ;&:Et  
* @author treeroot 246!\zf  
* @since 2006-2-2 tWy<9TF  
* @version 1.0 <OFqUp*l  
*/ gG?*Fi  
public class SelectionSort implements SortUtil.Sort { x" =q+sA  
Ny<G2! W  
/* Ol^EQLO  
* (non-Javadoc) n]g,)m  
* --hnv/AjI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \r&@3a.>  
*/ [~0q )  
public void sort(int[] data) { > %*X2'^  
int temp; 0X6o  
for (int i = 0; i < data.length; i++) { '%7]xp  
int lowIndex = i; +F6_P  
for (int j = data.length - 1; j > i; j--) { gx.]4 v  
if (data[j] < data[lowIndex]) { "C|l3X'  
lowIndex = j; ml/O  
} J<O_N~$$*  
} DN_C7\CoA  
SortUtil.swap(data,i,lowIndex); SuuS!U+i>  
} RlL,eU$CS  
} f.CI.aozW  
K?I&,t_*R  
} x/^zNO\1  
-L3RzX  
Shell排序: ^@> Qiy  
+Ea X S  
package org.rut.util.algorithm.support; X Y?@^  
)o,0aGo>Of  
import org.rut.util.algorithm.SortUtil; @=1``z#  
}Elce}  
/** 1#u w^{n  
* @author treeroot ^!tI+F{n{  
* @since 2006-2-2 xz'd5 re%  
* @version 1.0 jzw?V9Ijb  
*/ U /Fomu  
public class ShellSort implements SortUtil.Sort{ VG7#6)sQoK  
q,Q|Uvpk  
/* (non-Javadoc) h}_q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {<n)zLy  
*/ N/=3Bs0y-  
public void sort(int[] data) { 1r4/McB  
for(int i=data.length/2;i>2;i/=2){ tYa*%|!v  
for(int j=0;j insertSort(data,j,i); I-hhHm<@  
} H|O}Dsj  
} 5Yr$dNe  
insertSort(data,0,1); hdb4E|'A  
} ?^Ux+mVE  
U0T N8O}Z  
/** R:p,Hav<q  
* @param data g{(nt5|^l  
* @param j x~^nlnKVf  
* @param i WGK::?  
*/ </p.OaNe  
private void insertSort(int[] data, int start, int inc) { \]El%j4  
int temp; iHB)wC`u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b>WT-.b0  
} )P])0Y-  
} {D#`+uw  
} xx8na8  
V|`|CVFo]  
} YJ$ =`lIM  
kRPg^Fw"Vw  
快速排序: >AJ|F)  
[l:.Q?? )|  
package org.rut.util.algorithm.support; Mr(3]EfgO  
e:<> Yq+  
import org.rut.util.algorithm.SortUtil; uU s>/+  
.EwK>ro4  
/** H'>  
* @author treeroot 7m:,-xp  
* @since 2006-2-2 i/z7a%$   
* @version 1.0 ],|B4\b;  
*/ ^e ii 4  
public class QuickSort implements SortUtil.Sort{  j C?  
(0S7  
/* (non-Javadoc) rJ>8|K[kt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f6)H!SI  
*/ ^Du_e(TiyK  
public void sort(int[] data) { ZxQP,Ys_Y  
quickSort(data,0,data.length-1); wxxC&!  
} F^-4Pyq@  
private void quickSort(int[] data,int i,int j){ @dNbL}qQ  
int pivotIndex=(i+j)/2; <5%We(3  
file://swap htaLOTO;A  
SortUtil.swap(data,pivotIndex,j); J;dFmZOk  
u!W00;`L  
int k=partition(data,i-1,j,data[j]); 6~LpBlb  
SortUtil.swap(data,k,j); Ok!{2$P8U9  
if((k-i)>1) quickSort(data,i,k-1); &@+; ]t  
if((j-k)>1) quickSort(data,k+1,j); )3  
@T"385>  
} ^da-R;o]  
/** (n\ cs$  
* @param data %<t/xAge  
* @param i 4y]*"(sQ;  
* @param j tP-c>|cz  
* @return Pl4d(2 7  
*/ ;nE}%lT  
private int partition(int[] data, int l, int r,int pivot) { ; ]!  
do{ _NFJm(X.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "/5b3^a  
SortUtil.swap(data,l,r); Hw? J1#1IE  
} >B0S5:S$W  
while(l SortUtil.swap(data,l,r); ??PpHB J')  
return l; it$~uP |  
} H'2 =yhtVh  
^E^:=Q?'_  
} $ }53f'QjW  
al/~  
改进后的快速排序: c@`P{ 6  
Wj&s5;2a  
package org.rut.util.algorithm.support; &n|gPp77$  
zPe .  
import org.rut.util.algorithm.SortUtil; i{2KMa{K  
P;34Rd  
/** YQ/ *|  
* @author treeroot z5I<,[`  
* @since 2006-2-2 _PF><ODX2  
* @version 1.0 q2y:b qLWl  
*/ @p;4g_F  
public class ImprovedQuickSort implements SortUtil.Sort { .;'xm_Gw<  
AO6;aT  
private static int MAX_STACK_SIZE=4096; jo;n~>3P  
private static int THRESHOLD=10; /Q-!><riD  
/* (non-Javadoc) PLD!BD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )8;'fE[p}  
*/ bHCd|4e,2  
public void sort(int[] data) { c1i7Rc{q  
int[] stack=new int[MAX_STACK_SIZE];  (c"!0v  
IF=rD-x  
int top=-1; 9pXFC9  
int pivot; dU,/!|.K  
int pivotIndex,l,r; ?k#% AM  
qF ?S[Z;  
stack[++top]=0; < qBPN{'a"  
stack[++top]=data.length-1; m N{$z<r  
dn Xc- <  
while(top>0){ ;1KhUf;&F  
int j=stack[top--]; 3; A1[E6K  
int i=stack[top--]; vzL>ZBe Z  
kQ +   
pivotIndex=(i+j)/2; <FP -]R)  
pivot=data[pivotIndex]; Xp' KQ1w)  
f] Vz!hM~  
SortUtil.swap(data,pivotIndex,j); N|DY)W  
;(V=disU/  
file://partition wgrYZ^]  
l=i-1; +=R:n^r^,  
r=j; x\*5A,w{c]  
do{ |l9AgwDg  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =xgW$c/yB  
SortUtil.swap(data,l,r); {1o=/&  
} t5&$ y`  
while(l SortUtil.swap(data,l,r); @:Ns`+ W*  
SortUtil.swap(data,l,j); JOMZ&c^  
HV}NT~  
if((l-i)>THRESHOLD){ 1xw},y6T2  
stack[++top]=i; Ac|`5'/Tx  
stack[++top]=l-1; $z<CkMP!U7  
} T/H*Bo *=5  
if((j-l)>THRESHOLD){ * 08LW|:,  
stack[++top]=l+1; CTwP{[%Pk  
stack[++top]=j; RKe19l_V  
} zmdOL9"a  
,yB-jk?  
} Z8m/8M  
file://new InsertSort().sort(data); r@_;L>  
insertSort(data); \UXQy{Ex  
} X3nwA#If1  
/** 3LEN~ N}  
* @param data ]|-y[iu  
*/ 7B'0(70  
private void insertSort(int[] data) { 9Vp$A$7M  
int temp; ddw!FH2W (  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j*CnnM#n  
} KVK@Snn   
} Wjj'yqBO^  
} [\I\).  
Ngg (<ZN  
} le*pd+>j  
A>X#[qx  
归并排序: L:~ "Vw6]_  
/ZAEvdO*P  
package org.rut.util.algorithm.support; ?A]:`l_"  
aa$+(  
import org.rut.util.algorithm.SortUtil; hGPjH=^EM  
y M>c**9  
/** xNT[((  
* @author treeroot UA{A G;  
* @since 2006-2-2 +|^rz#X  
* @version 1.0 c: _l+CgeH  
*/ ;0ake%v]  
public class MergeSort implements SortUtil.Sort{ J.~$^-&!  
;hRo} +\l  
/* (non-Javadoc) {AJs pLcG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s$mcIMqs  
*/ 4SmhtC  
public void sort(int[] data) { Zsaz#z|xW  
int[] temp=new int[data.length]; >i=mw5`D]  
mergeSort(data,temp,0,data.length-1); )bqO}_B  
} xaejG/'iK  
%|4Nmf$:Og  
private void mergeSort(int[] data,int[] temp,int l,int r){ o4tQ9X=}  
int mid=(l+r)/2; $n!saPpxS  
if(l==r) return ; {5:y,=Y  
mergeSort(data,temp,l,mid); I9H+$Wjd  
mergeSort(data,temp,mid+1,r); c_+}`  
for(int i=l;i<=r;i++){ 7)z^*;x  
temp=data; k/cQJz  
} =ejkE; %L  
int i1=l; 1Qv5m^>vj  
int i2=mid+1; &Zd! |u  
for(int cur=l;cur<=r;cur++){ h8Kri}z;M  
if(i1==mid+1) gTm[<Y  
data[cur]=temp[i2++]; a3JG&6-  
else if(i2>r) !\2Xr{f  
data[cur]=temp[i1++]; tyNT1F{  
else if(temp[i1] data[cur]=temp[i1++]; 7@5}WNr  
else 9>%ti&_-jt  
data[cur]=temp[i2++];  GVe[)R  
} BG/M3  
} j$siCsF  
eA4@)6WP(  
} f8!*4Bw  
le`fRq8f&  
改进后的归并排序: t*~V]wZ  
89@gYA"Su  
package org.rut.util.algorithm.support; YqrieDFay!  
Az{Z=:(0  
import org.rut.util.algorithm.SortUtil; g&) XaF[!  
G)G5eXXX  
/** ?x=;?7  
* @author treeroot C8%q?.nH=  
* @since 2006-2-2 Ak^g#^c*  
* @version 1.0 GeD^-.^  
*/ |-%[Z  
public class ImprovedMergeSort implements SortUtil.Sort { C65( m  
*6?h,Dt L  
private static final int THRESHOLD = 10; ZXh6Se4o  
FY@ErA7~  
/* ~sx?aiO  
* (non-Javadoc) Z`Rrv$M!  
* ?zM]p"M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R#DnV[!\  
*/ tU.Y$%4  
public void sort(int[] data) { 7='lu;=,  
int[] temp=new int[data.length]; V'K1kYb  
mergeSort(data,temp,0,data.length-1); := C-P7  
} N^jQ\|A<  
Z.ky=vCt  
private void mergeSort(int[] data, int[] temp, int l, int r) { TFjb1 a,)  
int i, j, k; IC"bg<L,*  
int mid = (l + r) / 2; l03{ ezJk[  
if (l == r) HN]roSt~  
return; 8GgZAu'X  
if ((mid - l) >= THRESHOLD) EIPNR:6t  
mergeSort(data, temp, l, mid); [W;iR_7T5  
else >|'u:`A  
insertSort(data, l, mid - l + 1); W_8N?coM  
if ((r - mid) > THRESHOLD) w3WBgH  
mergeSort(data, temp, mid + 1, r); DD{-xCCR  
else #?DwOUw  
insertSort(data, mid + 1, r - mid); bz<f u  
t2uX+1F  
for (i = l; i <= mid; i++) { ).0klwfV  
temp = data; L3/m}AH,  
} V{+'(<SV  
for (j = 1; j <= r - mid; j++) { pyJY]"UHVE  
temp[r - j + 1] = data[j + mid]; 7&;M"?m&  
}  Wa7-N4  
int a = temp[l]; nLicog)!I  
int b = temp[r]; F!(Vg  
for (i = l, j = r, k = l; k <= r; k++) { H0r@dn  
if (a < b) { I7,5ID4pn  
data[k] = temp[i++]; R~ n[g  
a = temp; P'MfuTtT&  
} else { ]-]K4*{   
data[k] = temp[j--]; f9ux+XQk9  
b = temp[j]; lLhvpvT  
} ;+jz=9Q-  
} jkTC/9AE|  
} v"ZNS  
nI]8w6eCV  
/** 0vR gmn  
* @param data }@6ws/5  
* @param l Uq/FH@E=  
* @param i AtU%S9  
*/ [QwEidX|  
private void insertSort(int[] data, int start, int len) { )B'&XLK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i7D[5!  
} wr>[Eo@%\  
} ?i'N 9 /(  
} F#NuZ'U  
} 4:wVT;?a  
v_^>*Vm*  
堆排序: ^m pWQ`R  
&GYnGrw?@  
package org.rut.util.algorithm.support; uIh68UM  
b$FK}D5  
import org.rut.util.algorithm.SortUtil; 7W[+e&  
)<YfLDgTs  
/** Hw29V //  
* @author treeroot v *icoj  
* @since 2006-2-2 pY.R?\  
* @version 1.0 Kcl~cIh77  
*/ BV;dV6`z  
public class HeapSort implements SortUtil.Sort{ 4Ys\<\~d  
(-S\%,hO  
/* (non-Javadoc) ak1?MKV.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Yb]@9 >vn  
*/ p.@ kv  
public void sort(int[] data) { 6sjd:~J:  
MaxHeap h=new MaxHeap(); R` g'WaDk  
h.init(data); ' _ZiZ4O  
for(int i=0;i h.remove(); (>]frlEU~  
System.arraycopy(h.queue,1,data,0,data.length); "t0l)P*C}  
} Wdk]>w 'L  
UA4="/  
private static class MaxHeap{ V_\9t8  
POXd,ON9  
void init(int[] data){ pSa pF)1>  
this.queue=new int[data.length+1]; A4{14Y;?  
for(int i=0;i queue[++size]=data; ) KvGJo)("  
fixUp(size); ==#mlpi`S[  
} u~c75Mk_v  
} P*6h $T  
B<$(Nb5<  
private int size=0; ,{6 Vf|?  
i1dE.f ;  
private int[] queue; 8yCt(ms  
&c[ISc>N{  
public int get() { Uv)B  
return queue[1]; PPAcEXsIu  
} mP*Ct6628n  
w`YN#G  
public void remove() { R E0ud_q2  
SortUtil.swap(queue,1,size--);  ^t}1 $H  
fixDown(1); Lm&BT)*  
} :_8Nf1B+T  
file://fixdown ~`97?6*Ra  
private void fixDown(int k) { -kk0zg &|i  
int j; u_HCXpP!Q  
while ((j = k << 1) <= size) { {k}$L|w  
if (j < size %26amp;%26amp; queue[j] j++; k'8tqIUN]  
if (queue[k]>queue[j]) file://不用交换 F5y0(=$T  
break; 'vwu^u?  
SortUtil.swap(queue,j,k); Y6 <.]H  
k = j; j DkBe-`  
} 6%^A6U  
} kk>z,A4 h_  
private void fixUp(int k) { *$]50 \W  
while (k > 1) { 2WK c;?  
int j = k >> 1; +R8G*2  
if (queue[j]>queue[k]) {nPiIPH  
break; v\lKY*@f  
SortUtil.swap(queue,j,k); I:6H65(&  
k = j; `O0bba=:=  
} SPT?Tt  
} ??#SQSU  
V_3K((P6  
} _I?oR.ON33  
!tzk7D  
} M]Hf>7p  
T@jv0/(+  
SortUtil: 6bDizS}  
~_SRcM{  
package org.rut.util.algorithm; i@`qam   
%(1Jt "9|  
import org.rut.util.algorithm.support.BubbleSort; f"z;'  
import org.rut.util.algorithm.support.HeapSort; T' =6_?7K4  
import org.rut.util.algorithm.support.ImprovedMergeSort; kBU`Q{.  
import org.rut.util.algorithm.support.ImprovedQuickSort; RkZyqt @+  
import org.rut.util.algorithm.support.InsertSort; Q h{P>}  
import org.rut.util.algorithm.support.MergeSort; '=0l{hv@  
import org.rut.util.algorithm.support.QuickSort; wQ^RXbJI9  
import org.rut.util.algorithm.support.SelectionSort; B[IWgvB(e  
import org.rut.util.algorithm.support.ShellSort; JU#m?4g  
'gtcy  
/** bkuJN%  
* @author treeroot !k Heslvi  
* @since 2006-2-2 */HW]x|?V~  
* @version 1.0 Q@1SqK#-DQ  
*/ >,ABE2t5  
public class SortUtil { [<|$If99\  
public final static int INSERT = 1; q/^?rd  
public final static int BUBBLE = 2; Zts1BWL[  
public final static int SELECTION = 3; 1N[9\Yi  
public final static int SHELL = 4; 6e S~*  
public final static int QUICK = 5; *xjP^y":  
public final static int IMPROVED_QUICK = 6; `mH]QjAO  
public final static int MERGE = 7; ejia4(Cd  
public final static int IMPROVED_MERGE = 8; yl&s!I  
public final static int HEAP = 9; nYR#Q|  
erKi*GssZ  
public static void sort(int[] data) { Vr@tSc&  
sort(data, IMPROVED_QUICK); 0NK|3]p  
} *07?U")  
private static String[] name={ nu)YN1 *  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" FJ{/EloF  
}; - ~4na{6x  
Gr>CdB>~+  
private static Sort[] impl=new Sort[]{ xYZ,.  
new InsertSort(), (xE |T f  
new BubbleSort(), \H9:%Tlp~4  
new SelectionSort(), a`8]TD  
new ShellSort(), N/'8W9#6  
new QuickSort(), XS #u/!  
new ImprovedQuickSort(), l,~`o$ _  
new MergeSort(), =~"X/ >'  
new ImprovedMergeSort(), G[*z,2Kb>  
new HeapSort() QJ(5o7Tfn  
}; %NfXe[T  
]28j$)6  
public static String toString(int algorithm){ 6#AEVRJKU@  
return name[algorithm-1]; E[7E%^:Mg  
} Dw.I<fns^B  
( et W4p  
public static void sort(int[] data, int algorithm) { ak-agH  
impl[algorithm-1].sort(data); RO|8NC<oj  
} lT*@f39~g  
m"-kkH{I  
public static interface Sort { \#xq$ygg  
public void sort(int[] data); jO/cdLKX(  
} x.4z)2MO  
}#-@5["-X  
public static void swap(int[] data, int i, int j) { Hq+QsplG  
int temp = data; t|V<K^  
data = data[j]; W9pY=9]p+  
data[j] = temp; 7{(UiQbf  
} #0vda'q=j  
} -`DYDIr  
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