EJ3SSWG3DOQHAE3A557JNIKT74C5DHTWXANBQIKYPJCTHKGD7NEAC
IJGLKQESD33Y7UIM7U67M5MFJ4U2RZ5SS5PRBJJBKD2LCW7EJ35AC
2 + 3*4-5
(12 + 2) * (5 - 7) / 2
for queue.peek_back(operator_stack).type != TOKEN_TYPE.OPEN_PARENTHESIS { append(&ast, queue.pop_back(operator_stack)) } queue.pop_back(operator_stack)
for queue.peek_back(operator_stack).type != TOKEN_TYPE.OPEN_PARENTHESIS {
append(&ast, queue.pop_back(operator_stack))
}
queue.pop_back(operator_stack)