unique_ids_for_list.R

states=c("UP","MP","Raj","Maha")
districts=c("North","West","East","South")
villages=c("1","2","3","4")
newlist=NULL
for (i in 1:length(states)){
  newlist=c(newlist,paste(states[i],"_",districts))
}
newlist=gsub(" ","",newlist)
newlist

##  [1] "UP_North"   "UP_West"    "UP_East"    "UP_South"   "MP_North"  
##  [6] "MP_West"    "MP_East"    "MP_South"   "Raj_North"  "Raj_West"  
## [11] "Raj_East"   "Raj_South"  "Maha_North" "Maha_West"  "Maha_East" 
## [16] "Maha_South"

for (i in 1:length(newlist)){
  newlist=c(newlist,paste(newlist[i],"_",villages))
}
newlist

##  [1] "UP_North"       "UP_West"        "UP_East"        "UP_South"      
##  [5] "MP_North"       "MP_West"        "MP_East"        "MP_South"      
##  [9] "Raj_North"      "Raj_West"       "Raj_East"       "Raj_South"     
## [13] "Maha_North"     "Maha_West"      "Maha_East"      "Maha_South"    
## [17] "UP_North _ 1"   "UP_North _ 2"   "UP_North _ 3"   "UP_North _ 4"  
## [21] "UP_West _ 1"    "UP_West _ 2"    "UP_West _ 3"    "UP_West _ 4"   
## [25] "UP_East _ 1"    "UP_East _ 2"    "UP_East _ 3"    "UP_East _ 4"   
## [29] "UP_South _ 1"   "UP_South _ 2"   "UP_South _ 3"   "UP_South _ 4"  
## [33] "MP_North _ 1"   "MP_North _ 2"   "MP_North _ 3"   "MP_North _ 4"  
## [37] "MP_West _ 1"    "MP_West _ 2"    "MP_West _ 3"    "MP_West _ 4"   
## [41] "MP_East _ 1"    "MP_East _ 2"    "MP_East _ 3"    "MP_East _ 4"   
## [45] "MP_South _ 1"   "MP_South _ 2"   "MP_South _ 3"   "MP_South _ 4"  
## [49] "Raj_North _ 1"  "Raj_North _ 2"  "Raj_North _ 3"  "Raj_North _ 4" 
## [53] "Raj_West _ 1"   "Raj_West _ 2"   "Raj_West _ 3"   "Raj_West _ 4"  
## [57] "Raj_East _ 1"   "Raj_East _ 2"   "Raj_East _ 3"   "Raj_East _ 4"  
## [61] "Raj_South _ 1"  "Raj_South _ 2"  "Raj_South _ 3"  "Raj_South _ 4" 
## [65] "Maha_North _ 1" "Maha_North _ 2" "Maha_North _ 3" "Maha_North _ 4"
## [69] "Maha_West _ 1"  "Maha_West _ 2"  "Maha_West _ 3"  "Maha_West _ 4" 
## [73] "Maha_East _ 1"  "Maha_East _ 2"  "Maha_East _ 3"  "Maha_East _ 4" 
## [77] "Maha_South _ 1" "Maha_South _ 2" "Maha_South _ 3" "Maha_South _ 4"

newlist=gsub(" ","",newlist)
newlist

##  [1] "UP_North"     "UP_West"      "UP_East"      "UP_South"    
##  [5] "MP_North"     "MP_West"      "MP_East"      "MP_South"    
##  [9] "Raj_North"    "Raj_West"     "Raj_East"     "Raj_South"   
## [13] "Maha_North"   "Maha_West"    "Maha_East"    "Maha_South"  
## [17] "UP_North_1"   "UP_North_2"   "UP_North_3"   "UP_North_4"  
## [21] "UP_West_1"    "UP_West_2"    "UP_West_3"    "UP_West_4"   
## [25] "UP_East_1"    "UP_East_2"    "UP_East_3"    "UP_East_4"   
## [29] "UP_South_1"   "UP_South_2"   "UP_South_3"   "UP_South_4"  
## [33] "MP_North_1"   "MP_North_2"   "MP_North_3"   "MP_North_4"  
## [37] "MP_West_1"    "MP_West_2"    "MP_West_3"    "MP_West_4"   
## [41] "MP_East_1"    "MP_East_2"    "MP_East_3"    "MP_East_4"   
## [45] "MP_South_1"   "MP_South_2"   "MP_South_3"   "MP_South_4"  
## [49] "Raj_North_1"  "Raj_North_2"  "Raj_North_3"  "Raj_North_4" 
## [53] "Raj_West_1"   "Raj_West_2"   "Raj_West_3"   "Raj_West_4"  
## [57] "Raj_East_1"   "Raj_East_2"   "Raj_East_3"   "Raj_East_4"  
## [61] "Raj_South_1"  "Raj_South_2"  "Raj_South_3"  "Raj_South_4" 
## [65] "Maha_North_1" "Maha_North_2" "Maha_North_3" "Maha_North_4"
## [69] "Maha_West_1"  "Maha_West_2"  "Maha_West_3"  "Maha_West_4" 
## [73] "Maha_East_1"  "Maha_East_2"  "Maha_East_3"  "Maha_East_4" 
## [77] "Maha_South_1" "Maha_South_2" "Maha_South_3" "Maha_South_4"