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- public class harjutus {
- public static int tehe(String sisend){
- int vastus = 0;
- String esimene = "";
- String teine = "";
- int temp = 0;
- for(int i = 0; i < sisend.length(); i++){
- if (sisend.charAt(i) == '+' || sisend.charAt(i) == '-'){
- temp = i;
- }
- }
- for(int j = 0; j < sisend.length(); j++){
- if(sisend.charAt(j) != ' '){
- if(temp < j)
- esimene = esimene + sisend.charAt(j);
- else if(temp > j)
- teine = teine + sisend.charAt(j);
- }
- }
- if(sisend.charAt(temp) == '+')
- vastus = Integer.parseInt(esimene) + Integer.parseInt(teine);
- else if(sisend.charAt(temp) == '-')
- vastus = Integer.parseInt(teine) - Integer.parseInt(esimene);
- return vastus;
- }
- public static void main(String[] args){
- String arvutus = "5 + 7";
- String arvutus2 = "12 + 9";
- String arvutus3 = "22 - 86";
- System.out.println(tehe(arvutus));
- System.out.println(tehe(arvutus2));
- System.out.println(tehe(arvutus3));
- }
- }
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