Remove a Specific Charcter from a String in R

string<-c("ANDHRA PRADESH", "28,171", "1,442","1,341", "-7%", "5%","ARUNACHAL PRADESH", "201", "42", "46", "13,544","1,700")
string

##  [1] "ANDHRA PRADESH"    "28,171"            "1,442"            
##  [4] "1,341"             "-7%"               "5%"               
##  [7] "ARUNACHAL PRADESH" "201"               "42"               
## [10] "46"                "13,544"            "1,700"

Example:

gsub(",", "", string)

##  [1] "ANDHRA PRADESH"    "28171"             "1442"             
##  [4] "1341"              "-7%"               "5%"               
##  [7] "ARUNACHAL PRADESH" "201"               "42"               
## [10] "46"                "13544"             "1700"

Another Example:

gsub("A","",string)

##  [1] "NDHR PRDESH"   "28,171"        "1,442"         "1,341"        
##  [5] "-7%"           "5%"            "RUNCHL PRDESH" "201"          
##  [9] "42"            "46"            "13,544"        "1,700"

Another Example:

gsub("1", "", string)

##  [1] "ANDHRA PRADESH"    "28,7"              ",442"             
##  [4] ",34"               "-7%"               "5%"               
##  [7] "ARUNACHAL PRADESH" "20"                "42"               
## [10] "46"                "3,544"             ",700"