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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。 Lr "V  
插入排序: FaaxfcIfkw  
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package org.rut.util.algorithm.support; %^u e  
2Fbg"de3-  
import org.rut.util.algorithm.SortUtil; ~KxK+ 6[ :  
/** 0p*Oxsy  
* @author treeroot w)>/fG|;  
* @since 2006-2-2 $WQm"WAKe  
* @version 1.0 HoZsDs.XZ  
*/ x*:"G'zT  
public class InsertSort implements SortUtil.Sort{ u*T#? W?  
8;3I:z&muQ  
/* (non-Javadoc) h,MaF<~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &i *e&{L7  
*/ B\~(:(OPM]  
public void sort(int[] data) { QC1\Sn/  
int temp; 2FN#63  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  {C%f~j  
} TO/SiOd  
} @Fb 2c0?Y  
} zRm@ |IT  
}%3i8e  
} tYhNr  
?{OU%usQwE  
冒泡排序: lQ2vQz-J  
(w%9?y4Q  
package org.rut.util.algorithm.support; ]-w.x ]I  
AFWWGz  
import org.rut.util.algorithm.SortUtil; #0Z%4WQ  
}#Kl6x  
/** w!Ii   
* @author treeroot `pd+as  
* @since 2006-2-2 J c:j7}OOV  
* @version 1.0 jZ<f-Ff0  
*/ bZgFea_>i  
public class BubbleSort implements SortUtil.Sort{ .ITTYQHv)  
fQ f5%  
/* (non-Javadoc) 2KNs,4X@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Et;Ubj"+  
*/ j__l'?s  
public void sort(int[] data) { lQVK~8t3  
int temp; h- %RSei5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DV!0zzJ  
if(data[j] SortUtil.swap(data,j,j-1); LiJ./  
} ca:Vdrw`  
} }Gd^r  
} io7Zv*&T0  
} i >BQRbU  
@-O%u* %J  
} F^cu!-L  
]q|U0(q9  
选择排序: 2))p B/  
i(S}gH4*o  
package org.rut.util.algorithm.support; oox;8d4}y  
0He^r &c3  
import org.rut.util.algorithm.SortUtil; >oyZD^gj  
zCj#Nfm  
/** !PEP`wEKdp  
* @author treeroot gV-A+;u  
* @since 2006-2-2 > NtJ)N*  
* @version 1.0 .s3y^1C  
*/ dMa6hI{k  
public class SelectionSort implements SortUtil.Sort { er2#h  
,veI'WHMB  
/* I=7 YAm[W  
* (non-Javadoc) bDV/$@p  
* ynZfO2kf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (6i. >%|_  
*/ B\quXE)  
public void sort(int[] data) { {BD G;e  
int temp; B{7hRk.5!  
for (int i = 0; i < data.length; i++) { 'I@l$H  
int lowIndex = i; e^-CxHwA-  
for (int j = data.length - 1; j > i; j--) { }i9VV+L#1  
if (data[j] < data[lowIndex]) { +3r4GEa Z  
lowIndex = j; "E7YCZQR  
} < !PbD  
} =L, 7~9  
SortUtil.swap(data,i,lowIndex); U;FJSy  
} ?PU7xO;_  
} bfKF6  
;~n^/D2.  
} XM:\N$tg  
e^orqw/I  
Shell排序: dEPLkv  
C]ef `5NR]  
package org.rut.util.algorithm.support; cA B<'44R  
}k_'a^;C1  
import org.rut.util.algorithm.SortUtil; dg@'5.ApPu  
M[7$F&&n  
/** S.*LsrSV  
* @author treeroot '_ FxxLAO  
* @since 2006-2-2 4ms"mIt  
* @version 1.0 Z^#u n  
*/ HD>UTX`&mc  
public class ShellSort implements SortUtil.Sort{ WO[O0!X  
`"y:/F"{  
/* (non-Javadoc) oVIc^yk5a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6K5mMu#4  
*/ E[c6*I  
public void sort(int[] data) { Dh)(?"^9A  
for(int i=data.length/2;i>2;i/=2){ REJHh\:.77  
for(int j=0;j insertSort(data,j,i); #bGYd}BfD  
} WUGFo$ xA  
} %8?XOkH)  
insertSort(data,0,1); F+ <Z%KuCu  
} > QG@P  
pLtK:Z  
/** O-qpB;|  
* @param data P5&8^YV`N  
* @param j {ukQBu#}<  
* @param i !twYjOryH[  
*/ N;i\.oY  
private void insertSort(int[] data, int start, int inc) { /NQ PTr  
int temp; t/h,-x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Sgn<=8,6c  
} 'j\mz5#s  
} DJ|lel/'  
} =!IoL7x  
_a  zJ>  
} }N"YlGY\Yn  
L`"V_ "Q#0  
快速排序: T%SK";PAU$  
u0nIr9  
package org.rut.util.algorithm.support; ^CP>|JWD^  
$Ao'mT  
import org.rut.util.algorithm.SortUtil; *Nur>11D  
,n &Lp  
/** \W 7pSV-U  
* @author treeroot t@q==VHF  
* @since 2006-2-2 DY1"t7 9E  
* @version 1.0 Hh* KcIRX  
*/ UHBMl>~z  
public class QuickSort implements SortUtil.Sort{ ?b\oM v5y  
Z=(Tq1t  
/* (non-Javadoc) qI*7ToBJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I6PReVIb  
*/ qD,/Qu62  
public void sort(int[] data) { Dw<bLSaW&  
quickSort(data,0,data.length-1); D_ XOYzN}  
} n2Ew0-  
private void quickSort(int[] data,int i,int j){ x@tI  
int pivotIndex=(i+j)/2; k zC4V  
file://swap ogJ *  
SortUtil.swap(data,pivotIndex,j); D+{& zo  
-x-EU#.G  
int k=partition(data,i-1,j,data[j]); C@u}tH )  
SortUtil.swap(data,k,j); x;A.Ll  
if((k-i)>1) quickSort(data,i,k-1); r(JP& @  
if((j-k)>1) quickSort(data,k+1,j); 0U?(EJ  
\4>& zb4  
} AYfL}X<Ig  
/** ^7YZ>^  
* @param data .TNGiUzG  
* @param i ?*'0;K13  
* @param j se*k56,  
* @return V,]Fh5f  
*/ hp@F\9j  
private int partition(int[] data, int l, int r,int pivot) { K|=va>   
do{ ~ /rKKc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S2>$S^[U  
SortUtil.swap(data,l,r); mSGpxZ,IE  
} p!K^Q3kO  
while(l SortUtil.swap(data,l,r); hx ^l  
return l; C9*[/|T  
} H'Jz:6   
4K*st8+bl-  
} `cPZsL  
*E+VcU  
改进后的快速排序: yQf(/Uxk*x  
XW~a4If  
package org.rut.util.algorithm.support; OxUc,%e9P  
r 5t{I2  
import org.rut.util.algorithm.SortUtil; I]BhkJ  
Y(gai?  
/** c/V0AKkS 8  
* @author treeroot I@TH^8(  
* @since 2006-2-2 Wl }J=  
* @version 1.0 T8d=@8g,%  
*/ @U@O#+d'ZR  
public class ImprovedQuickSort implements SortUtil.Sort { Q{CRy-ha  
+.zX?}  
private static int MAX_STACK_SIZE=4096; `qRyh}Ax"  
private static int THRESHOLD=10; U2CC#,b!(  
/* (non-Javadoc) 8fktk?|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q/ (h{cq  
*/ Y*IKPnPot2  
public void sort(int[] data) { ,aIkiT  
int[] stack=new int[MAX_STACK_SIZE]; `G%h=rr^c  
%evtIU<h  
int top=-1; kSEgq<i!  
int pivot; 4p%^?L?  
int pivotIndex,l,r; ')/w+|F  
6OqF-nso[E  
stack[++top]=0; umCmxm r&  
stack[++top]=data.length-1; D !{e  
\fp'=&tp~a  
while(top>0){  cp0yr:~  
int j=stack[top--]; A4Q{(z-?  
int i=stack[top--]; 5rmQ:8_5  
0.2stBw  
pivotIndex=(i+j)/2; p_)ttcpi1  
pivot=data[pivotIndex]; :#cJZ\YH  
fIJX5)D  
SortUtil.swap(data,pivotIndex,j); + R~ !G  
y=Z[_L!xr  
file://partition &WOm[]Q4  
l=i-1; +\?+cXSc  
r=j; /U-+ClZi@  
do{ Cq'{ %  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HTMg{_r(%  
SortUtil.swap(data,l,r); 7P]i|Q{  
} ^Cvt^cI  
while(l SortUtil.swap(data,l,r); G(BSe`f  
SortUtil.swap(data,l,j); a <Iikx  
Z4E6J'B8  
if((l-i)>THRESHOLD){ Yq4nmr4  
stack[++top]=i; cI/}r Z+  
stack[++top]=l-1; b"nkF\P@Fj  
} J _q  
if((j-l)>THRESHOLD){ $4qM\3x0,  
stack[++top]=l+1; reM~q-M~o@  
stack[++top]=j; OR37  
} J :O&2g"g  
DLD9  
} /a)^)  
file://new InsertSort().sort(data); %LD(S*>7  
insertSort(data); Q2:r WE{K!  
} lCBH3-0^  
/** gZBKe!@a|  
* @param data pred{HEye  
*/ QpRk5NeLe  
private void insertSort(int[] data) { yE(<F2  
int temp; )1gT&sU0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _+H $Pa}?  
} ?P4y$P  
} (44L8)I.D  
} 3Bvz& `\  
+XW1,ly~  
} g9NE>n(3  
h9!4\{V;h  
归并排序: w4_Xby)  
f9 :=6  
package org.rut.util.algorithm.support; l*huKSX}  
QDVSFGwr  
import org.rut.util.algorithm.SortUtil; <a&xhG}  
8~~ k?  
/** /m,i,NX07  
* @author treeroot H8B2{]HAt  
* @since 2006-2-2 }Kp$/CYd  
* @version 1.0 %M/L/_d  
*/ ld):Am}/o  
public class MergeSort implements SortUtil.Sort{ q/Ji}NGm  
Z;BEUtR c  
/* (non-Javadoc) 1?3+>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VS_\bIC  
*/ [O|c3;  
public void sort(int[] data) { x]?V*Jz  
int[] temp=new int[data.length]; Uovna:"  
mergeSort(data,temp,0,data.length-1); 49O_A[(d  
} %e)vl[:}  
~l. C -  
private void mergeSort(int[] data,int[] temp,int l,int r){ 59v=\; UI  
int mid=(l+r)/2; V pzjh,r-j  
if(l==r) return ; YC<FKWc  
mergeSort(data,temp,l,mid); xj&~>&U){;  
mergeSort(data,temp,mid+1,r); cxvO,8NiB  
for(int i=l;i<=r;i++){ ="f-I9y  
temp=data; Io>U-Zd\>  
} "}ur"bU1  
int i1=l; gB+CM? LKq  
int i2=mid+1; ~E_irzOFP  
for(int cur=l;cur<=r;cur++){ vRD(* S9^  
if(i1==mid+1) VS>hi~j  
data[cur]=temp[i2++]; o1b.a*SZ  
else if(i2>r) J7e /+W~  
data[cur]=temp[i1++]; (~! @Uz5  
else if(temp[i1] data[cur]=temp[i1++]; k>8OxpaWv?  
else 'J!Gip ,  
data[cur]=temp[i2++]; w)1SZ }  
} rg#/kd<?[V  
} Ol<LL#<j4  
K`ygW|?gt  
} {{[@ X  
n <HF]  
改进后的归并排序: \IzZJGi  
S;2UcSsQl  
package org.rut.util.algorithm.support; b j<T`M!  
wdV)M?  
import org.rut.util.algorithm.SortUtil; eI|~neh  
&hi][Pt  
/** R`@7f$;wG  
* @author treeroot mz;ExV16  
* @since 2006-2-2 O8rd*+  
* @version 1.0 8^^ehaxy  
*/ 9)j"|5H  
public class ImprovedMergeSort implements SortUtil.Sort { '-G,7!.,r%  
W=|'&UU Ul  
private static final int THRESHOLD = 10; T2mZkK?rA  
9c1q:>|  
/* v]KPA.W  
* (non-Javadoc) >SYOtzg%  
* rEU1 VvE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}1l8Y  
*/ M$f_I +  
public void sort(int[] data) { p!?7;  
int[] temp=new int[data.length]; q?L*Luu+  
mergeSort(data,temp,0,data.length-1); `fVzY"Qv k  
} K+yi_n L  
[r'hX#  
private void mergeSort(int[] data, int[] temp, int l, int r) { SxC(:k2b;  
int i, j, k; Mz lE  
int mid = (l + r) / 2; 0{?%"t\/f  
if (l == r) +OB&PE  
return; Q-U,1b  
if ((mid - l) >= THRESHOLD) gKIN* Od  
mergeSort(data, temp, l, mid); DAEWa Kui  
else Xa&:Hg<  
insertSort(data, l, mid - l + 1); U[#q"'P|l  
if ((r - mid) > THRESHOLD) $.B}zY{  
mergeSort(data, temp, mid + 1, r); ~ r$I&8  
else _qQo}|/q  
insertSort(data, mid + 1, r - mid); :n x;~f  
7FP"]\x  
for (i = l; i <= mid; i++) { ~$Z_#,|i?  
temp = data; o i~,}E_  
} "DJ%Yo  
for (j = 1; j <= r - mid; j++) { kQ)2DCb dn  
temp[r - j + 1] = data[j + mid]; ^4saB+qm  
} DFGgyFay  
int a = temp[l]; -**fT?n  
int b = temp[r]; %]O #t<D  
for (i = l, j = r, k = l; k <= r; k++) { ]7h;MR  
if (a < b) { xz,M>Ua  
data[k] = temp[i++]; dsb z\w3:  
a = temp; a<V Mh79*  
} else { 52.hJNq#L  
data[k] = temp[j--]; VrFI5_M/  
b = temp[j]; mj y+_  
} o%Qn%gaX  
} wo^1%:@/2  
} ^$lsmF]^  
2Ju,P_<dt  
/** 6|%HCxWO  
* @param data Ax!fvcsN  
* @param l O}7aX '  
* @param i \l 3M\$oS>  
*/ s: MJ{r(s  
private void insertSort(int[] data, int start, int len) { $5>x)jr:w+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,z0E2  
} +6Vu]96=KC  
} F0Z cV>j}  
} mOYXd,xd  
} 9x9E+DG#(  
+Pn`AV1  
堆排序: k_%maJkXp  
a+\s0Qo<  
package org.rut.util.algorithm.support; HMR!XF&JjC  
8ZO~=e  
import org.rut.util.algorithm.SortUtil; Gv\fF;,R  
nON "+c*  
/** v/wR) 9  
* @author treeroot 6K9-n}z  
* @since 2006-2-2 wtGb 3D"am  
* @version 1.0 /B  
*/ jbTyM"Y  
public class HeapSort implements SortUtil.Sort{ F=kiYa}  
nSU7,K`PM  
/* (non-Javadoc) W@FGU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c<qJs-C4;  
*/ 6IM:Xj  
public void sort(int[] data) { P99s   
MaxHeap h=new MaxHeap(); 2{#=Ygb0  
h.init(data); 8L(KdDY  
for(int i=0;i h.remove(); g|4v>5Y  
System.arraycopy(h.queue,1,data,0,data.length); Al]z =  
} k :zGv  
+;;pM[U  
private static class MaxHeap{ m^,3jssdA  
wijY]$  
void init(int[] data){ 1) G6  
this.queue=new int[data.length+1]; .s@[-! p  
for(int i=0;i queue[++size]=data; #.\X% !  
fixUp(size); N" oJ3-~  
} ;4]l P  
} (%;D& ~%o  
]5J*UZ}  
private int size=0; R )e^H  
885 ,3AdA  
private int[] queue; 22m'+3I~Y  
2E3x=  
public int get() { G{oM2`c'#8  
return queue[1]; p&;,$KDA  
} :~9F/Jx  
w9a6F  
public void remove() { MT@Uu  
SortUtil.swap(queue,1,size--); SkA"MhX  
fixDown(1); '~'3x4Bo  
} %bUpVyi!(  
file://fixdown ZsYT&P2  
private void fixDown(int k) { x68s$H  
int j; ~# |p=Y  
while ((j = k << 1) <= size) { /d-7n|#E  
if (j < size %26amp;%26amp; queue[j] j++; *CXVA&?  
if (queue[k]>queue[j]) file://不用交换 \(ZOt.3!J  
break; t\C[mw  
SortUtil.swap(queue,j,k); YY<e]CriU  
k = j; yh Ymbu  
} gG=E2+=uy  
} bDPT1A`F  
private void fixUp(int k) { gs77")K&  
while (k > 1) { /-ky'S9  
int j = k >> 1;  Z@`HFZJ  
if (queue[j]>queue[k]) E^. =^bR  
break; m,]M_y\u  
SortUtil.swap(queue,j,k); 1{S" axSL  
k = j; K&noA  
} b}r3x&)  
} ~UJ_Rr54  
KcjP39@I  
} I*K~GXWs#  
DavG=kvd  
} th*E"@  
JEes'H}Y  
SortUtil: z '%Vy  
?5 d3k%  
package org.rut.util.algorithm; xTL"%'|  
SLc'1{  
import org.rut.util.algorithm.support.BubbleSort; 07+Qai-]  
import org.rut.util.algorithm.support.HeapSort; 8~|PZ,oZ  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ie?C<(8Ul  
import org.rut.util.algorithm.support.ImprovedQuickSort;  `#lNur\x  
import org.rut.util.algorithm.support.InsertSort; "L" 6jT  
import org.rut.util.algorithm.support.MergeSort; W7"ks(  
import org.rut.util.algorithm.support.QuickSort; oFV >b  
import org.rut.util.algorithm.support.SelectionSort; #`4ma:Pj  
import org.rut.util.algorithm.support.ShellSort; jM3{A;U2  
<&rvv4*H  
/** YvK8;<k@-?  
* @author treeroot ?79ABm a  
* @since 2006-2-2 Tce2]"^;  
* @version 1.0 `D%bZ%25c  
*/ Dl%NVi+n  
public class SortUtil { Pw'3ya8  
public final static int INSERT = 1; m.p{+_@M&  
public final static int BUBBLE = 2; 8+ 1t ys  
public final static int SELECTION = 3; 7>J8\=  
public final static int SHELL = 4; #\$R^u]!  
public final static int QUICK = 5; 5 !G}*u.  
public final static int IMPROVED_QUICK = 6; OE/O:F:1j  
public final static int MERGE = 7; @vaK-&|#$  
public final static int IMPROVED_MERGE = 8; ]W%<<S  
public final static int HEAP = 9; BUcze\+  
e;<=aa)}?  
public static void sort(int[] data) { !285=cxz  
sort(data, IMPROVED_QUICK); wvA@\-.+  
} amIG9:-1'  
private static String[] name={ v >71 ?te  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i1 ?H*:]  
}; iVt6rX  
x,z+l-y  
private static Sort[] impl=new Sort[]{ NQ!jkojD  
new InsertSort(), Pz1pEyuL  
new BubbleSort(), 2, ` =i  
new SelectionSort(), [L,Tf_t^Y  
new ShellSort(), ,r{\aW@  
new QuickSort(), /AP@Bhm  
new ImprovedQuickSort(), F"3PP ~  
new MergeSort(), oToUpkAI  
new ImprovedMergeSort(), @%K@oDL  
new HeapSort() (&FSoe/!['  
}; X/TuiKe  
[(Pm\o  
public static String toString(int algorithm){ @twClk.s  
return name[algorithm-1]; (yCF pb  
} [= -?n6  
~fE@]~f>  
public static void sort(int[] data, int algorithm) { ?*a:f"vQ  
impl[algorithm-1].sort(data); @U(D&_H,K  
} J]~LmSh  
R$=UJ}>  
public static interface Sort { w Maib3Q  
public void sort(int[] data); vO"Sy{)Z>  
} Z| Z447_  
!t6:uC7H  
public static void swap(int[] data, int i, int j) { ayuj)]b  
int temp = data; A_}F  
data = data[j]; K<KyX8$P0  
data[j] = temp; QdL ;|3K9  
} / PAxPZf_  
} xGJ{_M  
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