社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 7582阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 ~x9J&*zxM  
插入排序: en{p<]H  
`qmwAT  
package org.rut.util.algorithm.support; 6 L4\UT r  
<?IDCOt ?  
import org.rut.util.algorithm.SortUtil; %E@o8  
/** {G vGV  
* @author treeroot lq53 xT  
* @since 2006-2-2 &D[M<7T  
* @version 1.0 3,v/zcV  
*/ m4OnRZYlw  
public class InsertSort implements SortUtil.Sort{ -E6av|c,F  
53aJnxX  
/* (non-Javadoc) k?Hi_;o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LvS5N)[  
*/ 3 xW:"  
public void sort(int[] data) { B=]L%~xL$  
int temp; /2T  W?a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (Q||5  
} ejR$N!LL  
} %K3U`6kHcd  
} XQ[\K6X5  
] H;E(1iU  
} @BnK C&{  
NVkYm+J#  
冒泡排序: 6<\dQ+~  
dL4VcUS.  
package org.rut.util.algorithm.support; |Tmug X7  
J&h59dm-  
import org.rut.util.algorithm.SortUtil; Xlug{ Uh  
vgtAJp+p*  
/** ;sYDs71y  
* @author treeroot P]^8Enp  
* @since 2006-2-2 ul N1z  
* @version 1.0 1t/c@YUTy  
*/ XN t` 4$L  
public class BubbleSort implements SortUtil.Sort{ Q?j '4  
0&NM=~  
/* (non-Javadoc) CZ] Dm4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mB0`>?#i  
*/ R&t2   
public void sort(int[] data) { <75x@!  
int temp; u y"i3xD6-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9:RV5Dt  
if(data[j] SortUtil.swap(data,j,j-1); -tWxB GSa@  
} :I";&7C  
} mp sX4  
} bt1bTo  
} L=Aj+  
r*mYtS  
} 4IW90"uc  
7lF;(l^Z>}  
选择排序: l<=k#d  
N4VZl[7?  
package org.rut.util.algorithm.support; X(d:!-_m *  
emJZ+:%  
import org.rut.util.algorithm.SortUtil; "dndhoMq  
!X"nN9k  
/** aDz% %%:r  
* @author treeroot +ah4 K(+3  
* @since 2006-2-2 -ys/I,}<  
* @version 1.0 #gWok'ZcR  
*/ rLD1Cpeb,w  
public class SelectionSort implements SortUtil.Sort { @~$=96^  
KMb'm+  
/* $Nvox<d0  
* (non-Javadoc) )2W7>PY  
* -u~:Gd*l0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?S=y>b9R  
*/ :+9. v  
public void sort(int[] data) { k "7,-0gz  
int temp; d/oD]aAEr  
for (int i = 0; i < data.length; i++) { h8.(Q`tli  
int lowIndex = i; 8TH;6-RT  
for (int j = data.length - 1; j > i; j--) { dQH8s  
if (data[j] < data[lowIndex]) { {7IZN< e  
lowIndex = j; {be|G^.c  
} A`vRUl,c=  
} :SN?t  
SortUtil.swap(data,i,lowIndex); ixM#|Yq  
} .u7grC C  
} vfc5M6Vm)<  
7Y.yl F:  
} T[[E)f1[  
FR50y+h^$  
Shell排序: 9P <1/W!  
Wkb>JnPo  
package org.rut.util.algorithm.support; ~9!@BL\  
9@M;\ @&g  
import org.rut.util.algorithm.SortUtil; eUa:@cA  
ri3*~?k00  
/** ^Bw"+6d  
* @author treeroot )<'2 vpz  
* @since 2006-2-2 0V"(}!=2a  
* @version 1.0 s&WE'  
*/ Qd3ppJn  
public class ShellSort implements SortUtil.Sort{ NV} fcZ  
SJ8 ~:"\P  
/* (non-Javadoc) {KTZSs $n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hQzT =0  
*/ o4rf[.z  
public void sort(int[] data) { bTYR=^9  
for(int i=data.length/2;i>2;i/=2){ g rQ,J  
for(int j=0;j insertSort(data,j,i); Rdj3dg'<  
} M!VW/vdywL  
} <dS I"C<  
insertSort(data,0,1); xw~oR|`U  
} _iqaKYT$  
-yIx:*KI  
/** n ]l3 )u  
* @param data 7we='L&R  
* @param j /8dRql-Ne  
* @param i M>BVnB_,-  
*/  HsG3s?*  
private void insertSort(int[] data, int start, int inc) { V+})$m*>  
int temp; LsMq&a-j2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qw|B-lT{:  
} n%vmo f  
} "0>AefFd#  
} |U~\;m@  
&u2m6 r>W  
} GIkVU6Q}  
'|%\QWuZ  
快速排序: u8x#XESR7  
z^KBV ^n  
package org.rut.util.algorithm.support; n? ^oQX}.\  
aNICSxDN  
import org.rut.util.algorithm.SortUtil; \H PB{ ;  
70R_O&f-k  
/** 7}mr C@[i  
* @author treeroot +OI nf_O  
* @since 2006-2-2 loyhNT=  
* @version 1.0 a|dn3R>vX  
*/ &$pQ Jf  
public class QuickSort implements SortUtil.Sort{ Ni;jMc  
EUPc+D3  
/* (non-Javadoc) \3 rgwbF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T%TO?[cN  
*/ oSR;Im<2  
public void sort(int[] data) { 0w2<2grQ  
quickSort(data,0,data.length-1); H7{kl  
} }mk z_P(Z  
private void quickSort(int[] data,int i,int j){ IS{>(XT{  
int pivotIndex=(i+j)/2; *MCkezW7{  
file://swap  </Dv?  
SortUtil.swap(data,pivotIndex,j); kf' 4C "}  
0}>p)k3&A  
int k=partition(data,i-1,j,data[j]); 2tp95E`(O  
SortUtil.swap(data,k,j); *u>[  
if((k-i)>1) quickSort(data,i,k-1); <{HV|B7  
if((j-k)>1) quickSort(data,k+1,j); wX@g >(  
c5eimA%`  
} Fe 7 8YDx?  
/** Og2w] B[  
* @param data B1U7z1<  
* @param i .T~Oc'wGo  
* @param j kKVNE h Tp  
* @return I^``x+a  
*/ E@@XWU21;N  
private int partition(int[] data, int l, int r,int pivot) { U]E~7C  
do{ ~#rmw6y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T' )l  
SortUtil.swap(data,l,r); s%zdP  
} s<LYSrd  
while(l SortUtil.swap(data,l,r); N/B-u)?\:  
return l; Cj6$W5I m  
} |s !7U  
W_]onq 6  
} [Al} GM  
{k<mN Y  
改进后的快速排序: > a8'MK  
A9y3B^\*  
package org.rut.util.algorithm.support; 7Rr +Uzb(  
$r(9'm}W  
import org.rut.util.algorithm.SortUtil; ?$H=n{iW  
J}VG4}L  
/** yzL6oU-{&  
* @author treeroot u5P2*  
* @since 2006-2-2 Gl>*e|}  
* @version 1.0 j@jUuYuDgl  
*/ Vfr.Yoy  
public class ImprovedQuickSort implements SortUtil.Sort { ]RI+:f  
T^nOv2@,  
private static int MAX_STACK_SIZE=4096; S),acc(d  
private static int THRESHOLD=10; H')8p;~{}  
/* (non-Javadoc) I^gLiLUN*6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6PRP&|.#  
*/ gp]T.ol  
public void sort(int[] data) { &>Nw>V  
int[] stack=new int[MAX_STACK_SIZE]; |#O>DdKHT  
ALp|fZ\vp  
int top=-1; )#025>$z  
int pivot; U{&gV~  
int pivotIndex,l,r; 3c[TPD_:  
 bR83N  
stack[++top]=0; *)qxrBc0  
stack[++top]=data.length-1; ZcrFzi  
3m/XT"D  
while(top>0){ /,^AG2]( f  
int j=stack[top--]; z7]GZF  
int i=stack[top--]; /baSAoh/e  
= _/XFN  
pivotIndex=(i+j)/2; /G!M\teeF  
pivot=data[pivotIndex]; >B+!fi'SS>  
B5/"2i  
SortUtil.swap(data,pivotIndex,j); %_ Vj'z~T  
0-I L@Di`F  
file://partition D'\gy$9m1  
l=i-1; ]9$^=z%SE  
r=j; Ou2p^:C(  
do{ 6fw2 ;$x"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F+m;y  
SortUtil.swap(data,l,r); -h,?_d>  
} e6I7N?j  
while(l SortUtil.swap(data,l,r); !TPKD  
SortUtil.swap(data,l,j); U~Rs?JmTdD  
L<ET"&b;4  
if((l-i)>THRESHOLD){ y3@5~4+  
stack[++top]=i; Kr@6m80E5  
stack[++top]=l-1; eIt<da<G?  
} 7E\k97#G  
if((j-l)>THRESHOLD){ 2X@"#wIg  
stack[++top]=l+1; t/(rB}  
stack[++top]=j; R2f^dt^  
} h%>yErs  
(cm8x  
} EVDcj,b"^  
file://new InsertSort().sort(data); lWk/vj<5  
insertSort(data); 'DtC=  
} 9 kLA57  
/** 1R7w  
* @param data cP >[H:\Xc  
*/ _+}#  
private void insertSort(int[] data) { wF$z ?L  
int temp; &O^t]7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iO{LsG*5Z  
} }]|e0 w:  
} 5T]dQ3[v4  
} _.^`DP >  
IOOK[g.?h  
} T3h1eU  
*w[0uQL5Z  
归并排序: NbUbLzE  
Eanwk` Rx  
package org.rut.util.algorithm.support; $9?<mP2-*  
hf< [$B  
import org.rut.util.algorithm.SortUtil; ugS  
@k||gQqIB  
/** -s9()K(vZG  
* @author treeroot }sW%i#CV  
* @since 2006-2-2 t-)d*|2n}o  
* @version 1.0 ;]^% 6B n  
*/ nXfd f-  
public class MergeSort implements SortUtil.Sort{ -Rbv#Y  
*b\&R%6dR  
/* (non-Javadoc) f}w_]l#[G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K aNO&%qX  
*/ ZP9x3MHe  
public void sort(int[] data) { +PKd </*]  
int[] temp=new int[data.length]; !:M+7kmr7t  
mergeSort(data,temp,0,data.length-1); KLgg([  
} <,,X\>B  
(W+aeB0  
private void mergeSort(int[] data,int[] temp,int l,int r){ kt7x}F(?<  
int mid=(l+r)/2; EjP9/V G@=  
if(l==r) return ; ZhY03>X  
mergeSort(data,temp,l,mid); |H>;a@2d  
mergeSort(data,temp,mid+1,r); {fS~G2@1  
for(int i=l;i<=r;i++){ { _~vf  
temp=data; ayQ2#9X}  
} 8\Hz FB  
int i1=l; *g[MGyF "  
int i2=mid+1; Cm;M; ?  
for(int cur=l;cur<=r;cur++){ & 6nLnMF8x  
if(i1==mid+1) Q+ZZwqyxD  
data[cur]=temp[i2++]; hd@jm^k  
else if(i2>r) 3a}53? $  
data[cur]=temp[i1++]; CI^s~M >  
else if(temp[i1] data[cur]=temp[i1++]; 8~ u/gM  
else QM@zy  
data[cur]=temp[i2++]; vF1Fcp.@  
} w$"^)E G,7  
} nB6 $*'  
O2"5\@HfE  
} 4|;Ys-Q  
$+$4W\-=X  
改进后的归并排序: vL8Rg} Jh4  
zJo?,c  
package org.rut.util.algorithm.support; F(|XJN  
H`1q8}m  
import org.rut.util.algorithm.SortUtil; c/E'GG%Q%  
k{D0&  
/** st)qw]Dn;Y  
* @author treeroot l"/E,X  
* @since 2006-2-2 m}6Jdt'|  
* @version 1.0 -`UOqjb]3  
*/ 2WC$r8E  
public class ImprovedMergeSort implements SortUtil.Sort { *U +<Hv`C  
jcHyRR1R  
private static final int THRESHOLD = 10; y% O^Zm1  
;.=]Ar}  
/* n 0g8B  
* (non-Javadoc) gFl@A}  
* @D>qo=KPM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>{o]^xw-D  
*/ m"!Q5[  
public void sort(int[] data) { c2-oFLNP=  
int[] temp=new int[data.length]; OAf}\  
mergeSort(data,temp,0,data.length-1); [ps4i_  
} 1)!2D?w  
`R!Q(rePx  
private void mergeSort(int[] data, int[] temp, int l, int r) { g{CU1c)B  
int i, j, k; nf1O8FwRb  
int mid = (l + r) / 2; wV-9T*QrM  
if (l == r) $$i Gs6az  
return; Up0kTL  
if ((mid - l) >= THRESHOLD) TjHt:%7.  
mergeSort(data, temp, l, mid); 2D /bMq  
else Xyjd7 "  
insertSort(data, l, mid - l + 1); -kHJH><j  
if ((r - mid) > THRESHOLD) _=}.Sg5Q  
mergeSort(data, temp, mid + 1, r); g'cVsO)S  
else aW9\h_$  
insertSort(data, mid + 1, r - mid); xjD."q  
X 8):R- J  
for (i = l; i <= mid; i++) { kPoz&e_@  
temp = data; I51I(QF=  
} ~F%sO'4!  
for (j = 1; j <= r - mid; j++) { q1v7(`O  
temp[r - j + 1] = data[j + mid]; 29cx(  
} *HB 32 =qD  
int a = temp[l]; gegM&Xo  
int b = temp[r]; H4W!Md  
for (i = l, j = r, k = l; k <= r; k++) { -fp/3-  
if (a < b) { o`G6!  
data[k] = temp[i++]; -ijzo%&qA  
a = temp; cbl>:ev1h  
} else { ESUO I  
data[k] = temp[j--]; "Mz#1Laby`  
b = temp[j]; =cO5Nt  
} IwRP,MQ~  
} rgDl%X2B  
} >@Pw{Zh$  
%J Jp/I  
/** `vz7 }TY  
* @param data g)=$zXWhP  
* @param l :zY;eJKm  
* @param i f@[)*([  
*/ %a FZbLK  
private void insertSort(int[] data, int start, int len) { -*Tf.c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '#SZ|Rr6tX  
} JI  cm$  
} $@O?  
} eK5~YM:o  
} ug.|ag'R  
| P`b"x  
堆排序: }Xfg~ %6  
~f"3Wa*\B  
package org.rut.util.algorithm.support; kR3wbA  
%a|Qw(4\  
import org.rut.util.algorithm.SortUtil; oUO3,2bn  
J% n#uUs  
/** l fF RqZ  
* @author treeroot @,7r<6E  
* @since 2006-2-2 Pm%5c\ef  
* @version 1.0 P (DEf(  
*/ -%| ] d ;  
public class HeapSort implements SortUtil.Sort{ ;Yv{)@'Bc  
E 0/>E  
/* (non-Javadoc) [oXSjLQm[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'IFA>}e7W  
*/ _`gkYu3R+  
public void sort(int[] data) { )B+R|PZ,  
MaxHeap h=new MaxHeap(); ("F$r$9S  
h.init(data); -2!S>P Zs  
for(int i=0;i h.remove(); :J_UXtx  
System.arraycopy(h.queue,1,data,0,data.length); #Hz9@H  
} 'CSjj@3X  
_iCrQJ0"T  
private static class MaxHeap{ m5&Ht (I%n  
X)6G :cD  
void init(int[] data){ l0;u$  
this.queue=new int[data.length+1]; ]uF7HX7F  
for(int i=0;i queue[++size]=data; E_I-.o|  
fixUp(size); Y652&{>q  
} ITg:OOQ  
} ,A $IFE  
tQRbNY#}Z  
private int size=0; GyMN;|  
/W`CqJk-*.  
private int[] queue; _KKux3a  
F(zCvT   
public int get() { lNf);!}SM  
return queue[1]; o5 ~VT!'[  
} w=<E)  
>2#<tH0  
public void remove() { Z,SV9 ~M  
SortUtil.swap(queue,1,size--); (n8?+GCa  
fixDown(1); )">#bu$  
} y z!L:1DG  
file://fixdown 2wnk~URj  
private void fixDown(int k) { YFPse.2$a  
int j; pdER#7Tq  
while ((j = k << 1) <= size) { Fx}v.A5  
if (j < size %26amp;%26amp; queue[j] j++; *0Z6H-Do,  
if (queue[k]>queue[j]) file://不用交换 3 !8#wn  
break; (9ZW^flY  
SortUtil.swap(queue,j,k); AZE%fOG<i  
k = j; )Ute  
} kr|r-N`  
} (T$cw(!  
private void fixUp(int k) { *3E3,c8{A  
while (k > 1) { 5'+g[eNyBV  
int j = k >> 1; }No#_{  
if (queue[j]>queue[k]) R.2i%cU  
break; n0gjcDHQ  
SortUtil.swap(queue,j,k); H^5,];  
k = j; lP)n$?u  
} 5+!yXkE^e  
} Pv,PS.,-  
V6](_w!  
} :RukW.MR  
lK7:qo  
} pfIK9>i  
xzOvc<u  
SortUtil: A'7Y{oPHX  
$H.U ~  
package org.rut.util.algorithm; {fDRVnI?  
\p( 0H6  
import org.rut.util.algorithm.support.BubbleSort; BeQ'\#q,  
import org.rut.util.algorithm.support.HeapSort; Ix,b-C~  
import org.rut.util.algorithm.support.ImprovedMergeSort; $*$4DG1gaR  
import org.rut.util.algorithm.support.ImprovedQuickSort; "%+||IyW  
import org.rut.util.algorithm.support.InsertSort; 4[gbRn'  
import org.rut.util.algorithm.support.MergeSort; ": BZZ\!  
import org.rut.util.algorithm.support.QuickSort; f/Y7@y  
import org.rut.util.algorithm.support.SelectionSort; "PElQBLP:  
import org.rut.util.algorithm.support.ShellSort; 0sKo NzE  
[ ^\{>m7  
/** lH`c&LL-=!  
* @author treeroot +mD;\iW]  
* @since 2006-2-2 ~,};FI  
* @version 1.0 yK"\~t[@X:  
*/ Qi dI  
public class SortUtil { w5s&Ws  
public final static int INSERT = 1; w5)KWeGa  
public final static int BUBBLE = 2; "N_@q2zF  
public final static int SELECTION = 3; /O$~)2^h  
public final static int SHELL = 4; Q.7X3A8  
public final static int QUICK = 5; z1,#ma}.  
public final static int IMPROVED_QUICK = 6; m(:R(K(je  
public final static int MERGE = 7; S1)g\Lv  
public final static int IMPROVED_MERGE = 8; MIl\Bn  
public final static int HEAP = 9; ]j,o!|rx7  
H|aC(c  
public static void sort(int[] data) { (zy|>u  
sort(data, IMPROVED_QUICK); g'T L`=O  
} ,wg(}y'  
private static String[] name={ |0u qW1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ? eI)m  
}; N4-Y0BO  
.Wp(@l'Hd  
private static Sort[] impl=new Sort[]{ | B$JX'_  
new InsertSort(), *gGw/jA/  
new BubbleSort(), ^/Yk*Ny  
new SelectionSort(), ^t<L  
new ShellSort(), rfQs 7S;G  
new QuickSort(), g0a!auWM  
new ImprovedQuickSort(), WuF\{bUh  
new MergeSort(), v,N!cp1  
new ImprovedMergeSort(), NcwUK\  
new HeapSort() XPq`; <G  
}; oa7 N6  
5syzh S  
public static String toString(int algorithm){ ASMItT  
return name[algorithm-1]; -:L7iOzgD  
} PIFZ '6gn  
R6>*n!*D@  
public static void sort(int[] data, int algorithm) { &1=,?s]&  
impl[algorithm-1].sort(data); v6aMYmenBH  
} X=6L-^ o)  
hHcevSr  
public static interface Sort { ~e,K  
public void sort(int[] data); `Has3AX8  
} C'l\4ij)7  
j+/EG^*/  
public static void swap(int[] data, int i, int j) { -~\7ZRP8  
int temp = data; 54TWFDmGi  
data = data[j]; F/p1?1M  
data[j] = temp; Yu&\a?]\2  
} FU}- .Ki  
} QJkiu8r  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
温馨提示:欢迎交流讨论,请勿纯表情、纯引用!
认证码:
验证问题:
10+5=?,请输入中文答案:十五