Question 245547 in Javascript Question posted in
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Nested While Loops in JavaScript how to solve

I was using a nested while loop, and ran into a problem, as the inner loop is only run once. To demonstrate I’ve made a bit of test code:

let i = 1, j = 1;
while (i < 5) {
  console.log('outer', i);
  while (j < 4) {
    console.log('inner', j);
    j++;
  }
  i++;
}

Help me how to solve this problem, I have tried in every but the reuslt was the same

Tags:

5

Answers


  1. 0

    Your problem is that you never reset j to 1, after running the inner loop.

    this will reset j to 1 after running the inner loop, and the while loop will now run every time the outer loop runs.

    let i = 1, j = 1;

while (i < 5) {
  console.log('outer', i);
  while (j < 4) {
    console.log('inner', j);
    j++;
  }
  j = 1;
  i++;
}
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  2. 0

    Just move the j variable inside the first while loop

    let i = 1
while (i < 5) {
  let j = 1;
  console.log('outer', i);
  while (j < 4) {
    console.log('inner', j);
    j++;
  }
  i++;
}
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  3. 0

    Your not reseting the inner counter var.

    let i = 1 , j = 1;
while(i < 5){
    console.log("outer : " + i);
    while(j < 4){
        console.log("inner : " + j);
        j++;
    }
    i++;
    j = 1; //reset here inner counter after full cicle
}
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  4. 0

    Could you please put the "j" inside the first loop and try

    let i = 1;
while(i < 5) {
    console.log('Outer: '+i);
    let j = 1;
    while(j < 4) {
        console.log('Inner: '+j);
        j++;
    }
    i++;
}
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  5. 0 
    let i = 1;
while (i < 5) {
  console.log('outer', i);
  let j = 1;
  while (j < 4) {
    console.log('inner', j);
    j++;
  }
  i++;
}
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